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choice. This image is a derivative work of the following images: File:Backcrossing_mice_from_chimera.svg licensed with Cc-by-sa-3.0-migrated, GFDL 2008-01-06T01:12:40Z...

genetic material from one lineage to another occurs through repeated backcrossing to each parental line. author name string: Mcruzan Wikimedia username:...

genetic material from one lineage to another occurs through repeated backcrossing to each parental line. author name string: Mcruzan Wikimedia username:...

Comparative development of Heliothis virescens and hybrid backcross progeny reared at five temperatures   (  ) Author United States. Science and Education...

Spinning and fiber properties of Pima, SxP and a Pima-SxP backcross   (  ) Author United States. Agricultural Marketing Service Campbell, Malcolm E. (Malcolm...

DescriptionBackcrossing 1.jpg English: Backcrossing inbreeding lavels Date 8 September 2014, 23:08:53 Source Own work Author Donach...

inland. Some high-grade herds have been established through continuous backcrossing to cattle of Brahman breeding. These animals closely resemble some of...

DescriptionBackcrossing 3.jpg English: Backcrossing with recurrent maintenance - random fertilized. Date 8 September 2014, 23:09:12 Source Own work Author...

are now Being used as recurrent parents in Backcrossing^ In 1922 Harlan and Pope descrihed the Backcross technique of plant Breeding and its advantages...

only once and that, thereafter, the new strain could be maintained by backcrossing the fertile females to males of the parental strain. Ecology, Dynamics...

DescriptionBackcrossing 2.jpg English: Backcrossing with recurrent maintenance - intensive. Date 8 September 2014, 23:09:01 Source Own work Author Donach...

being attained by backcrossing to the female variety for 3 or more generations. Since 15/16 of the genes of a male from the third backcross to the variety...

DescriptionTen generations of backcrossing .gif English: Replacing a detrimental allele. (A) A purebred dog from a breed carrying the dominant functional...

Baart was backcrossed scale. reciprocally to provide awned and awnless counterparts of the Onas and Baart varieties. Strains derived by backcrossing are especially...

tetraploid G. hirsutum L. to produce a penta- CHARACTERS Continued backcrossing to G. hirsutum L. resulted in a return to the tetraploid chromo- ploid...

normal backcrossing with pollen from culti- Plants that grew from vated oats. these first-generation seeds, fertilized by backcrossing, appeared...

were not used for backcrossing. In 1935 a number of the most uniform F and F lines showing a high degree of resistance were backcrossed to the flue-cured...

DescriptionBackcrossing mice from chimera.svg Diagram to explain the rationale behind backcrossing a mouse, in this case after production of a heterozygous...

50011 5 Lepidoptera: Pyralidae. 6 Guthrie, W. D., and S. W. Carter. Backcrossing to increase survival of larvae of a laboratory culture of the European...

0.70 for one cluster and less than 0.30 for a second, indicative of backcrossing, while one individual had between 28 and 37% contribution from three...

DescriptionBackcrossing.png English: Congenic strains, which are used to identify candidate disease loci and genes. Date Published online October 5, 2016...

inherited as a simple Mendelian dominant factor. This made feasible backcrossing the hybrids with American varieties, which pro1 Formerly assistant professor...

--because of the complexity of the task of transmitting resistance. In backcrossing, the goal is simply to add only one desired characteristic to an adapted...

fruit itself aspect of potentially fruit updating information on the backcrossing first To be must be borne in adequate amounts on a fruit stalk long...

segregating material backcrossed one or two generations. Twenty different inbred lines were \ised as recurrent parents in the backcrossing program. With the...

concluded that plants containing early flowering genes could be used in a backcrossing program to transport desirable genes and reduce the time required to...

DescriptionLai trở lại backcrossing.png Tiếng Việt: Lai trở lại (backcrossing) là cho lai với thế hệ trước. Date 24 July 2021 Source Own work Author Thày...

Additional improvements in the extra-long staple types were undertaken by backcrossing to either the Sea Island or Upland parents, intercrossing between selected...

conditions for disease produced in the greenhouse. Through hybridization, backcrossing, and selection many of the valuable horticultural qualities of the best...

the Backcross Method in the Breeding of Some Non-Cereel Crops. After a chapter on the theory of backcrossing, there are chapters on the backcross method...

and (3) strains or varieties crossing and subsequent inbreeding or backcrossing ; controlled pollination of the most desirable types of diflferent...

then crossing the first-generation heifers with a Brahman bull and backcrossing the resulting female progeny with a bull of the same breed as the original...

leaf blight. (6) Further backcrossing or outcrossing of selections from (5) to Eastern clones will give the second-backcross generation, with still greater...

DescriptionBackcrossing mice from chimera edit.svg English: Chimeric trait distribution by generation Date 19 January 2021 Source Own work Author Upirix...

combined mtDNA haplotypes and multilocus genotypes consistent with F2 backcrossing, and thus hybrid viability. 3.2. Phenotypic and reproductive attributes...

Recent hybrid forms, on the other hand, are the result of extensive backcrossing with longleaf pines. Hence, Sonderegger pine, as presently viewed, comprises...

size of the progeny of the new hybrid was increased by successively backcrossing three times to — Figure 1. Plant of Pan America tomato just before...

acreage in 1955. Calrose was selected out of the Caloro-Calady x Caloro backcross and it was released from the Biggs Station in 19U6. It is a medium grain...

other desirable characteris- which the Vernal has been carried on as backcrossing program. satisfactory degree of winterhardiness mended varieties...

This step was continued for 3 or 4 cycles of backcrossing. The clones selected at each stage of backcrossing were said to be nobilized because with each...

per cent Marquis, after the second it is 87.5 per cent Marquis, etc. Backcrossing is continued until first I Sr6 Marquis Sr8 Sr7 Sr9 SrIO Rusted...

open-pollinated varieties, from second cycle inbreds. by recovery from backcrossing, by recurrent selection; (2; dent com hybrids of superior yield, standing...

resistance and to be able to utilize RFLP markers for tracking resistance in backcrossing. In two different populations, RFLP markers for resistance to ear rot...

This includes crossbreeding, inbreeding, outbreeding, linebreeding, and backcrossing until an animal meeting the specifications has been developed. Then the...

that had flavor and other fine qualities but could not resist mildew. Backcrossing on Hale Best and several generations of selection finally produced Cantaloup...

Txl27e^ where on both backcrossing and selfing an excess of fertile plants has been obtained o The combined data for 11 backcross families grown in 1956...

for the two generations, he backcrossed resulting plants with 14 pairs of chromosomes to Langdon. Further backcrossing and durum plant selection...

involving the use of the amphiploid Triticum dicoccoides x Ae. umbellulata , backcrossing, and x~ray treatments . One derivative that provides near immunity to...

Clark 63, Hawkeye 63, Harosoy 63 , and Lindarin 63, were developed by backcrossing Phytophthora resistance to currently grown varieties of the same name...

Plant parent called is backcrossing. Usually from 4 to 8 backcrosses are made to the desirable variety. After the last backcross the progeny are all similar...

backcross (family 46). (a) BC46: female-informative backcross HL � H (n ¼ 46). Owing to the absence of crossing-over in female moths, this backcross has...

The Relative Efficiency of Convergent Improvement, Crossbreeding and Backcrossing for the Production of Broiler Stock. To (1) test and evaluate relative...

may represent F2 or F3 hybrids, others are probably the products of backcrossing. The number of primroses in the sample is rather small, but they form...

crossing it with one or both of its parents. This is commonly called backcrossing. A backcross may be made in both directions; that is, the hybrid may be crossed...

Paraguay or with Havanna and Paraguay and vice versa in succession (backcrossing), with 1.2. Botanical and morphological 1.3 . Soil and climate : 2...

varieties of standard limas possesses resistance to nematodes but a backcrossing program is under way to add the resistance of Westan to Ventura, the...

DescriptionBackcross.png English: Schematic diagram of backcrossing 日本語: 戻し交配の模式図　掲載者作　 Date 27 June 2005 (original upload date) Source Transferred from...

self sterile but are cross fertile if provided with sugarbeet pollen. Backcrossing to sugarbeet improves vigor but results in undesirable segregants that...

varieties to which resistance to Phytophthora rot had been transferred by backcrossing were evaluated extensively in 1961. Two of these, Harosoy and Hawkeye...

mating systems of interest to the industry. The third generation of a backcrossing study (Ala., 5-year averages) indicated similar performance for 1/8 Charolais...

described the relative ease with which genotypes can be recovered when backcrossing to cytoplasmic steriles, two or three back crosses being all that were...

selecting superior hybrid trees without regard to parentage, and then backcrossing these selected trees to a large number of interior trees. Superior individuals...

romaine type) immune to mildew and the variety New York. By selection and backcrossing some very good mildew-resistant "New York" strains were obtained. These...

gene is being transferred by conditioned by a single dominant gene. backcrossing to a few adapted varieties in the event the new race of . -5- frogeye...

is being placed in suwral of our breeding lines by means of repeated backcrossing, with a view to using them as the female parent in the production of...

desirable oat types. It is then almost always necessary to follow with backcrossing of the hybrid to the desirable parent through one or more generations...

Animals of tne first and second generations were intermated, followed by backcrossing, to obtain desirable combinations of characters. The breed traces to...

addition of both backcrossed variants (i.e. backcrossed to domesticated and wild fish), as well as F2 hybrids. Examining backcross and F2 hybrids allows...

entries were virtually eliminated. Nevada Synthetic XX was developed by backcrossing root-knot nematode resistant clones M-7 (selected from 'Vernal' by E...

genetic purity for white was fixed in Evaluation The intermating and backcrossing were continued until boars. promote combination of the desired traits...

technique involves roadblock. controlled pollination, prevent to backcrossing to the parent species. and hybrid could provide wheatgrass, a hybrid...

Annual Repert, page 3)* Selection for Disease Resistance The program of backcrossing disease resistance into Vernal and into Pasture Laboratory clones is...

late-generation hybrid or backcross (e.g. see [69]). 3.5. Comparative analysis documents rate of colour divergence in the backcross hybrid Based on a recent...

crossbred ewes and rams and their decendants have been interbred without backcrossing to either parent stock. In the fall of 1929 the Bureau of Animal Industry...

Introduced IL-2Rγnull mice from Dr. Sugamura, Tohoku Univ. and start backcross mating to B6 or BALB/cA mice. Introduced by Fox Chaise Cancer Center...

of field populations east of central Kansas. It was de- veloped in a backcrossing program by the California Agricultural Experiment Station at Davis in...

SUMMARY The backcrossed-male breeding project 1948 has proceeded as far as the fifth backcross with two lines and to the fourth backcross with six lines...

inbred WF9 requires, in addition, a dominant c ompiementary gene". As backcrossing programs designed to incorporate Rf, into existing inbreds (in the presence...

DescriptionInbreeding- Backcross.jpg English: Backcrossing. Date 8 September 2014, 23:26:31 Source Own work Author Donach...

Generatioi^ generations Generations . d SOUrM of "backcrossed*selfed,if any "restoration" Bemarks Inbred" backcrossed ’ " ’ ’ ’ Canada (Morden) ND203 ND255...

should be avoided. Numbers are needed to indicate the generations of backcrossing. For many years we have used a capital letter to designate the source...

Brawley, Calif., for potential use outside the wilt area and were used in backcrossing to several wilt tolerant Acala strains. Other "east-west" crosses provided...

83 488 SECOND GENERATION St-bred St-bred 1st Backcross 2nd Backcross 3-way cross 1st Backcross 367 69 417 388 78 454 239 84 463 284 0 353 69...

golden jackals and domestic dogs. One of them was a backcross to jackal and another one was a backcross to dog, confirming that 2015 The Authors. Published...

converted 'Lee', an adapted Group VI variety, to Group IV maturity, using a backcrossing program with 'Hawkeye' as the non¬ recurrent parent. All determinate...

substantially increase these frequencies. For example, instances of backcrossing to striped bass were observed following the stocking of white x striped...

bacterial wilt tolerant segregates were found and these were used in backcrossing to Nebr. #1 sel. 27. This latter parent was used as the recurrent parent...

oO oO % © Co wo O a © ot i Be Sor® ome) orc Oo,oO S 238 Oo & UV Backcross of imported sow Farrowed at Beltsville in a iS) SSeS 54° ee G0”...

quality as derived from Asiatic x American species hybridization with backcrossing to American-type raspberries. One of the black raspberry selections (NC-307)...

California Forest and Range Experiment Station) . . ABSTRACT The backcross hybrid of Jeffrey and Coulter pines (Pinus jeffreyi x (P. jeffreyi x P...

Mediterranean) X (Dietz X Carina) with a selection from Purplestraw X Kanred and backcrossing twice to Purplestraw. It was distributed to growers in the fall of 1947...

unreduced eggs and, thus, high levels of ploidy. Multiple hybridization or backcrossing among U0 chromosome species in dilatata have thus far also resulted in...

spruce, an Engelmann x white spruce cross, and a Sitka x white x white backcross. Results showed Sitka and Norway spruce grew well but were badly damaged...

sterile lines that have been converted to a uniform type and maintained by backcrossing in successive generations (some for eight generations) have shown a few...

profusely, but appears to be sterile and has not yet set seed by selfing or backcrossing. Research is in progress to develop methods for using colchicine to double...

large numbers of seeds are not expected from these crosses. 5 In the backcrossing program pursued with dates to produce males suitable for crossing varieties...

factor for yellow and PI were known to be get a satisfactory three-point backcross test involved several difficulties, as follows: 1. in Yellow endosperm...

different male-steriles were incorporated into basic flue-cured stocks by backcrossing. The male-sterile flue-cured lines were then compared in terms of yield...

work management are found, the long process begins of crossing and backcrossing to transmit good commercial Weeds may be controlled by cultural, ...

a ton/ hectare. that the USDA opment The was marker-assisted backcrossing support ongo- He legumes, cotton and grass genome (NAL), reported...

Animals of tne first and second generations were intermated, followed by backcrossing, to obtain desirable combinations of characters. The breed traces to...

trouts generally has been taken as evidence that both hybridization and backcrossing were extensive (Dill 1945, 1950, Needham and Card 1959, Schreck 1969...

Experiment Station. It is a Genessee type, obtained from a program of backcrossing the soft red wheat Redcoat to Genesee. Breeder seed of Ionia is a composite...

than the backcross progenies containing roughly sylvesfris and densiflora germ plasm. P. densiflora was also more resistant than the backcross progenies...

produce only weak-red red plants, accounted for as a cytoplasmic backcrossing corn plants, in particular lines of corn Progeny of genes. such crosses...

X (Prigida X P. taeda) backcross were equal to the diploid in growth rate. Spontaneous polyploids have also arisen in backcross progeny and have been intensively...

formed by introduc- gene into a normal, d-, A tall line through backcrossing. ARS dwarf per a simple recessive characteristic. dwarf crop. Tests...

Large-scale rearing procedures for the sterile backcross have been developed and releases of the backcross on an island (St. Croix, V.I.) caused suppression...

the western third of the Island were backcross (sterile) males. More than 20 percent of the males were backcross males for eight generations after release...

add a new paragraph (nn) to read as follows: (nn) Backcross (1) The term “first generation backcross” means the first generation cross between a single...

from them or brought to them to create new genetic lines for Kentucky’s backcross breeding program. After providing new genetic breeding lines, these trees...

Cylindrocopturu s eatoni during and 1950 in Jeffrey pine and Jeffrey backcross -hybrid progenies grown in the 19U6 nursery 19^-9 Experiment 11 Pollen...

upright, wilt -resist ant non-spreaders, 20 clones were selected for backcrossing to desirable hay type with disease resistance* Approximately k pounds...

species to sugar- is like Transferring resist- ance takes continued backcrossing. Resistant varieties and chemical treatment of seed the backbone of...

L. H. Edwards.110 Performance of lines from four generations of a backcrossing program involving Glycine max and G. Fehr and R. G. Palmer soja. ...

This is a horticultural hybrid of Sitka spruce and white spruce with a backcross to white The 26 surviving trees were spruce. attacked several times by...

undesired genes from Finnsheep are negligible. After several generations of backcrossing and intense selection for ovulation rate, it should be possible to introduce...

Keep, 1975). In a conventional breeding program several generations of backcrossing may be necessary (35-40 years, as with black currant x gooseberry hybrids...

bred the India melon with a commercial variety to produce the ninth backcross and also made selec- tions for tolerance, antibiosis, and qual- each...

program reached a maximum, with over 5 1/2 million backcross pupae being shipped. Total production of backcross and tobacco bud¬ worm pupae for this program...

one parent the chromosomes will pair with those with and quail Backcrossing between the chickens. hybrid and stabilize a its parent species could...

least 56 families of fishes (Lagler 1977). For example, instances of backcrossing to striped bass were observed following the stocking of white x striped...

proposed four- step breeding 1. in Transfer method this way: traits by backcrossing into the barley chosen as female par- This would be occur frequently...

Tables 1, 2, and 3. Backcross cows weaned about 12% more calves than straight Hereford cows. Table 1. Further, calves from these backcross cows averaged 6...

breeding groups can be evaluated. First Backcross and F?, 1971-1975; Second Backcross and F^ 1973-1977 - (Table 3) Backcross (B^) and Fj[ inter se (i.e., F2)...

such as good yield, disease resistance, and standability. In a normal backcrossing program, able that withstand both early-season whorl. these a resistant...

3/4Heref >rd 3/4Her ford 1/4 Br Swi ;s l/4Holst tin l/4Cha rolais Backcross Backcross Backcros s 100 100 100 100 14 20 18 22 6 9 1 5 8 8...

However, the high production of flowers seems to be reduced by progressive backcrossing. Further crosses to several Dianthus species have produced seed. Chrysanthemums...

developed at the Montana AES from the cross P.I. 178383 x Westmont^, backcrossed and It is resistant to stripe rust and selected for disease resistance...

and second-generation descendants, some by >ollination and some by backcrossing to self- both parents, liey resemble the yellow-flowered ancestor...

diverIG CLUB 60 WHEAT, a product of the sity.” Big Club 60 is a product of backcross cooperative wheat breeding investigations of the California Agricultural...

hybridize naturally, particularly on cool, moist Hybridization followed by backcrossing and sites. natural selection within the hybrid swarms has resulted in...

to estimate the heterotic effect. The study of crossbreeding involves backcrossing, three-breed crossing, four-breed crossing, and rotational crossing,...

this station. Another promising hybrid This is produced by placing is a backcross. pollen of a hybrid between Jeffrey and Coulter pines on the conelets...

amphiploid also showed multivalent associations. Extensive efforts at backcrossing the doubled hybrid using wild or soybean pollen have so far failed to...

annual ryegrass. Treating these with colchicine has not been helpful hut backcrossing with tall fescue has secured increasing fertility in successive generations...

pH of the upper 6 inches of the soil from a neutral 7.0 from the backcross made in- shorter days and cooler weather. parts, Shelby yields less...

a normal clone will be carried into segregating generations through backcrossing and selfing. Two partially male -sterile (75 percent aborted pollen)...

antibiosis bioassays with the com earworm. Beginning with the 2nd or 3rd backcross, we will make testcrosses using sweetcom seed from the seifs of the converted...

same breeding. They were derived by crossing Late Mammoth x P39 and backcrossing three times to P39, selecting for a larger plant and ear. The lines have...

the related half-sibs were themselves crossed in half- and full-sib, backcross, self, or outcross matings. Finally, and mainly in the last 5 years after...

cross has yielded very low proportions of sound seeds. Therefore, the backcross hybrid listed below is considered of greater practical importance. 7....

687.3 945.26 114.448 B HORIZON BACK RADIATION (-SITE BACKCROSSING (INTERSPECIFIC) BACKCROSSING INTRASPECIFIC) BACKFIRES (-FIRE SUPPRESSION BACTERIA (-FOREST...

hybrid index values, suggesting a deficit of first-generation hybrids and backcrossed genotypes. Thus, selection against hybrid genotypes may be playing a...

1955). Raney not only reported on hybrids but also noted instances of backcrossing between the hybrid and the parent species. This indicated, of course...

infestation endocarp has Prunus argentea. Following three generations of backcrossing, this trait continues to show both good heritability and resistance....

Martin generation offspring resulted in a bi- zarre insect, but backcrossing the Fi female to male tobacco bud- worms produces hybrids that behave...

with the labor and time required to obtain large backcross progenies, limits the value of the backcross method in breeding and genetic work with lettuce...

Station, is resistant to Heterodera glycines. NC 55 resulted from the third backcross of Lee to the original cross of Lee x Peking. Seed was increased in the...

and foliar diseases About 5 percent developed bacterial wilt. The third backcross generation, selfs, and various intercrosses will be established in the...

"synthetic comprest." These "synthetic comprest" are being progeny testec" by backcrossing to both parental types. The resiilts clearly indicate that the size of...

organisms. The California Blackeye was used as the recurrent parent in a backcross breeding program. Eventually the Blackeye 5 most nearly duplicated in...

129SvJ/C57BL/6 [12,16] backcrossed to C57Bl/6 J for more than eight generations, were used in this study. Bmp7tm1.1Dgra mice backcrossed to more than 10 generations...

found in a Clark backcross, is recessive and results in about 10 inches additional height. The other, found in a Harosoy backcross, is dominant and results...

second test with 27 backcross families, 15 families had no dead plants 6 days after adding metribuzin. In the other 12 backcross families, 25 percent...

tuberosum subsp. characteristics tuberosum haploids, some diploid species backcross, S. berthaultii categorized as 1 EBN do not cross with tetraploid ...

suggested that the definition for backcross be deleted and that, in its stead, definitions be added for foundation backcross, single cross, top cross, foundation...

These females were backcrossed with the samie male parent, and selected females in resulting successive generations were again backcrossed with the same male...

introducing Simmentals was "grading-up" to approach pure breed status by backcross mating successive generations of crossbred females to Simmental bulls...

Indehiscent F 2 X Fi plants of the backcross: (No. 45 No. 45. Selfed seed. 286187. Row 152. Same as backcross. Selfed seed. row 151 but X Kanagawa...

attempts were also made to obtain viable seed by self pollination and backcrossing to the parental species. Additional research is needed to develop methodology...

d. Vigor (zigzag clover) Rapid e. Vigor (kura clover) Rapid Backcross breeding Mildew resistance (red clover) Virus resistance (red clover)...

G0 larvae hatched with 191 surviving to adulthood. The G0 adults were backcrossed in 81 small groups with G, larvae and pupae screened for DsRed fluorescence...

and crude fiber than the backcross hybrid and tall fescue varieties. Palatability of the amphiploid was superior to the backcross hybrid and the fescue varieties...

559 plants) characteristics have been tomato lines, desig- mercial backcross remained healthy nated 22C2, (25 X 28) 193, and (45 x during the 1962...

» an<^ backcross hybrids. Only additive ge¬ netic effects were significant; heritability of seed damage was 24 percent. 'AET 5' was backcrossed to BC2...

Name: 'NC272' was derived frcan 2177-1(83), an S5 line developed by backcrossing an early B73 line, 'B73G' twice to ETO 'Blanco'. ETO 'Blanco' is a broad'NC272'...

Sioux progeny, Hirsutum parents, Hirsutum progeny, Fj_, backcross to Sioux, and backcross to Hirsutum, varied widely. Information Desired Summaries...

I n 1931 the University did make lent to dairymen, the average butThe backcross method of breeding, such a survey of the commercial ef- terfat production...

into Wisconsin Hollander, the two varieties were crossed. Selection and backcrossing were continued for several generations along two major lines, one directed...

1/2 incn Per year (fig- 10)- When these first-generation hybrids are backcrossed to the Chinese chestnut parent tree, the progeny is practically as resistant...

individuals as pure western, pure southern, F1, F2, western or southern backcross with a power above 95% at a probability threshold of 90%. Comparison of...

Lake is being established as part of The American Chestnut Foundation’s backcross breeding program. This program is developing blight-resistant chestnut...

State bniversity. This work at present consists of four phases: (1) a backcross program with .material of U.S* 13 maturity to improve its cold reaction...

I n 1931 the University did make lent to dairymen, the average butThe backcross method of breeding, such a survey of the commercial ef- terfat production...

traits. Joppa first crossed emmer to each of die Langdon lines and dien backcrossed die offspring to die Langdon lines dirough several generations. This...

I n 1931 the University did make lent to dairymen, the average butThe backcross method of breeding, such a survey of the commercial ef- terfat production...

expelled * 11? 3 Seed stock organization supplies needs further backcrossing All restorer versions in T cytoplasm . - 14 ~ Table 1 (cont’d....

combined in two single-male matings in 1935 and in four F matings and one backcross mating in 1936. In 1936 and 1937s additional hatching eggs were obtained...

midrib, adjusted for grain showed a 10% gain for brown midrib silage. Some backcross recoveries of brown midrib showed less vigor than normals whereas some...

1/2 inch per year (fig. 10). When these first-generation hybrids are backcrossed to the Chinese chestnut parent tree, the progeny is practically as resistant...

organisms. The California Blackeye was used as the recurrent parent in a backcross breeding program. Eventually the Blackeye 5 most nearly duplicated in...

i llcn Per y ear (fig- 10)- When these first-generation hybrids are backcrossed to the Chinese chestnut parent tree, the progeny is practically as resistant...

1/2 inch per year (fig. 10). When these first-generation hybrids are backcrossed to the Chinese chestnut parent tree, the progeny is practically as resistant...

Acala and Hopi—a primitive cotton cultivated by the Indians--and delayed backcrossing to Acala. This new cotton, AHA 6-1-4, has a staple length of about 1-3/32...

I n 1931 the University did make lent to dairymen, the average butThe backcross method of breeding, such a survey of the commercial ef- terfat production...

7/8 Hereft rd 1/8 Holst< ‘in 1/8 Charola .s 1/8 Brown Swiss Backcross Backcross Backcross 100 100 100 18 18 20 15 3 10 3 4 8 10 12 4 8...

hitherto unknown on either parent species have occurred. Some of these backcross plants are very attractive and are being increased. 10. . ' . Endosperm...

highly resistant to most the known races of stem rust. In 1929 we began a backcross with White Federation and Baart, our two most widely grown varieties....

highly inbred strains (BALB/cJ and C57BL/6J) and their derived Fi, backcross, F2 , and F3 generations. Mice were tested individually for 3 minutes...

genes may be available in relate'd species. Interspecific hybridization, backcross ing, and similar breeding methods can then be employed to transfer resistance...

males and fertile females through subsequent backcross generations. Male sterility persisted through 40 backcross generations. If this technique can be perfected...

females produce pigmented and white-egg normally females in a 3:1 ratio. Backcross matings of F2 white- egg females to Fi males produce normally pigmented...

MDMV-A artificially Entries of Zea inoculated at Columbia. diploperennis backcrossed to both Mol7 and B73 were tolerant to MDMV and MCDV at House Springs...

326'. The female parent <NC 2560> was converted to male sterility by backcrossing the line into a Nicotiana suaveolens cytoplasmic source. Flowers are...

males and fertile females through subsequent backcross generations. Male sterility persisted through 60 backcross generations. If this technique can be perfected...

polycross nursery for further observation. Male Sterility in Orchardgrass Backcross-type progenies i.e. (MS x MF)MF were established in the field in 1959...

transfer of genes for insect resistance into elite corn inbreds using a backcross breeding Robert Brown reported on research to evaluate and aflatoxin...

produced nine promising hybrids that have been described. known A backcross of one of Clapper's more resistant hy- brids to the American parent...

considerable material from the first cross of T. I. 448 400 401). Improved backcross to the flue-cured type (T. I. 448A wilt-resistant strains similar to standard...

five generations. At least one generation of selfing, subsequent to backcrossing, will be required to fix the fertility restoring gene or genes in a homozygous...

a pure American chestnut tree on USACE lands and the management of a backcross breeding orchard on USACE lands. As noted prior to the plaque presentation...

sterility, poor mating success, and low progeny survival, there is almost no backcrossing into parental populations. However, the bull trout are at a disadvantage...

male fertile due to a dominant Rf1 introduced from NK-198 by recurrent backcrossing, from which we expected a stronger signal of RF1-Oma1 than that obtained...

highly resistant to most the known races of stem rust. In 1929 we began a backcross with White Federation and Baart, our two most widely grown varieties....

DescriptionHaplotypeMap B6 x F1 backcross.jpg English: Fictional Microsatellite Haplotype Data from a (B6xDBA) x B6 murine back cross Date 2 March 2026...

leukemia after skin painting. The animals of the first generation backcross to DBA /2, how- ever, had an incidence of about 25 percent leukemia...

species hybrids. There has been reluctance to use the nominal F2 and backcross populations resulting from open pollination within populations. To some...

lot; (2) improve gain in Brahman by crossing with Hereford and continue backcrossing to Brahman; (3) evaluate cattle with regard to adaptability to environment...

developed at Auburn by Dr. E. D. Donnelly. This was accomplished using the backcross method with normal high tannin sericea as the recurrent parent and with...

provenances of P. strobus better adapted to mountainous conditions, or (3) backcross the hybrid to P. monticola. it The poor performance plot is not discouraging...

increased in the heterosis retention project to permit adequate numbers of backcross, F2 and F3 matings in 1975 and 1976. Parental and Fx matings will be made...

says. After each backcross, several cycles of selection are required to regain hair density, much of which is lost in the backcross. "It is a complex...

range of tonalities and various intensities of blotching. None has been backcrossed or selfed, which is the logical procedure. Rhododendron mucronatum (Blume)...

8810021 'NC278' was derived from 2182-1(83), an S5 line developed by backcrossing an early B73 line, 'B73G', twice to ETO 'Blanco'. ETO 'Blanco' is a broad-based...

actually, each representing an established commercial variety modified by backcrossing to add resistance to phytopthora rot. And in the case of dark 63 resistance...

1953; pgs 6, 7 and 21. . Back crossing. The theory and practice of the backcross method in the breeding of some non-cereal crops. By Mary Thomas. A review...

disorders, were also obtained in the Ottawa collection, in the F« and backcross progenies of tetraploid Dactyl is ascher soniana x orchard grass, as well...

interspecific hybrids are immune to the nematode. Screening of large backcross populations under nematode exposure has permitted the selection of 33...

Recently, 13 infected clones were Dr. Mel Westwood, Collaborator and backcross hybrids for which we have both successfully propagated following heat-therapy...

hypotheses but unless ancestor from the A. fibrillum/A. has such extensive backcrossing to A. simillimum to the point that A. aaseae genetic material from A...

highly resistant to most the known races of stem rust. In 1929 we began a backcross with White Federation and Baart, our two most widely grown varieties....

quality of colonized relative to wild-type insects. Colonies of He!iothis backcross (H_. virescens x H_. subflexa, females progeny x male H_. virescens) and...

Vangl2flox/flox mice [24] and the CAGG-CreERTMTg/− Vangl2flox/+ progeny backcrossed to Vangl2flox/flox to yield CAGG-CreERTMTg/− Vangl2flox/flox conditional...

were accomplished at Canal Point during 1958. Screening, testing, and backcrossing this material will be done as rapidly as possible to provide valuable...

CONSTELLATION July 2010 75 Around the District Around the District Backcross breeding brings seeds of hope at Raystown Lake By Cori Brown Operations...

Genetic Type Collection, Feb. 1976 and additions to Aug. 1979. List of backcross isolines of Clark and Harosoy, 1975 (1980 available soon). List of wild...

and fertile females through subsequent backcross generations. Male sterility has persisted through 40 backcross generations. If this technique can be perfected...

DescriptionGreater Prairie Chicken and Sharp-tailed Grouse Backcross (documentation).jpg English: Dunn Ranch 3/27/15 Photos taken by Tom Rauch. Used with...

zygotes formed by extracted self united with pure white produced in the backcross of Fi with white (text-figure 2, Fi X W) range in grade from 1 to 9 with...

unavailability of a suitable practical tech¬ nique to screen the and backcross individuals, the inheritance of Pj could not be studied accurately. With...

(R) Flavonol content of leaves & flowers The white-flowered L62-904 (backcross strain of Harosoy) was crossed with T235 ; i.e., w-jW^WmWm x W^W,wmwm...

of elements takes place in the germ-cells of the hybrid, consists in backcrossing the hybrid (Pj) to one of the parent stock, viz., to the not dominant...

loans on real estast mortgages. road this via day rer trains many How backcrossed the Ohio, and fell on the ioods' levies of Lewis, who were, of course...

Weymouth, which is a second backcross to the highbush (June X Cabot), and the Murphy and Wolcott, which are both a third backcross to the highbush. Table 2...

selection of a variant individual from plants of the initial variety, backcrossing, or transformation by genetic engineering. E. The third party's performance...

was another segregate from the same cross as Cooper Wax (fig. 2, B) backcrossed to Wax. In productivity, Ashley Wax is one of the most prolific strains...

of Back with the caused a way he In this In rust. second the backcross Unlike Chinese Spring wheat, how- doubling of the chromosome number...

fertility, were crossed and backcrossed with plants having the CMS cytoplasm, giving a total of 30 populations. The Fx and backcross generations segregated...

Probably the factor came from the game, because group E was present in the backcross as well as in F 2 and because these black birds are always stippled. The...

Gates Fusiform Rust Incidence and Volume Growth in a FirstGeneration Backcross Population, (Shortleaf x Slash) X Slash 152 C. D. Nelson V The Verification...

molecular basis of male sterility in Heliothis virescens x H. subf lexa backcross hybrids. The gene or genes which give rise to this phenomenon will be...

was derived from a cross between U. I. Great Northern 1 and Michelite, backcrossed 3 times to Michelite. .BoAttaZ, /?m7&e?/ 7?M?er, J9h^pod, JSM?/ /??/(m...

includes adapted varieties Clark, Harosoy and Lee, into which have been backcrossed single genes or combinations of genes. Also included are certain genes...

intercrossing large wild white clovers and Ladino in the F]_ generation and backcrossing to Ladino in the Fg' and F3 generations. These plants were propagated...

honoz;ygous lines having two Dav/sonresistaz-ce factors from popu].ations backcrossed 5 tines to Peso or Big Club, Another threa.t is the likelihood of insufficient...

Tranzschel(1895). and and then by restoring quality and yield through repeated backcrossing to the commercial variety (Thomas 1952). Promising early results already...

rust-resist- ance genes were then bred into separate lines of flax by backcrossing to 10 (Genes, the units of heredity, Bison. chromosomes are borne...

he might seriously consider searching for a mutant rather than use a backcross program with known male steriles. be screened effectively at harvest time...

the most widely plant grown yellow-seeded After sev- eral years of backcrossing to Lee and related strains, a few resistant yellow- seeded lines emerged...

selective tools for stalk lodging resistance With few exceptions, the backcross progenies showed that increased gene dosages of the resistant or susceptible...

plant from this cross was again crossed with Redman. This system of backcrossing was used to combine the overall good performance of Redman with the rust...

530 parental species individuals, 3,170 F2 and 600 backcross progeny in 71 60 F 2 and 8 backcross) only a 2 summary emphasizing the relevant aspects...

ledifolius hybrids appear to be quite fertile (Table 3). Segregating backcross progeny from these hybrids are abundant and can be identified by their...

promising hybrid was the backcross Jeffrey x (Jeffrey x Coulter). It showed little damage by insects, snow, or porcupines. This backcross hybrid, now being bred...

DescriptionGreater Prairie Chicken and Sharp-tailed Grouse Backcross (documentation) - 16872617408.jpg English: Dunn Ranch 3/27/15 Photos taken by Tom...

published. (b) Data on the first generation of phase III involving backcross and three-breed cross calves will be analyzed and published with particular...

populations used in the experiment (except as noted) followed by repeated backcrossing to the four breeds of sire. Grade-up programs to these breeds started...

agent by two procedures, susceptible agent free inbred mice, (2) JESy backcrossing to males of a strain known to be relatively susceptible to the wild mouse...

spontaneous mutations in JAX mice. The pair learned about interspecific backcrossing needed for this linkage at a conference shortly after arriving in Frederick...

l/h Angus, 3A Angus- lA Hereford, and 7/8 Hereford. - l/8 Brahman. The backcross calves were graded, slightly higher for both type and. condition than...

was succe sfully ing to the male parent in eight of these progenies. backcrossed to _S„ verrucosum . Three diploid progenies involving S. chacoense and...

selection of a variant individual from plants of the initial variety, backcrossing, or transformation by genetic engineering. Article 15 Exceptions to the...

production and quality could be obtained through additional crossing and backcrossing Upland-like. from It gossypioides and G. involving these cottons...

(2) improve gain in Brahman by crossing with Hereford aind continue backcrossing to Brahman; (3) evaluate cattle with regard to adaptability to environment...

centers and suggested a number of modified breeding methods, such as backcrossing to a single male rather than through brother X sister matings. A concept...

Persistence Examination of trispecies intergeneric hybrid derivatives from backcrossing to tall fescue confirmed stability of the hexaploid (2n = 42) chromosome...

selection of a variant individual from plants of the initial variety, backcrossing, transformation by genetic engineering, or other method. (4) Kind.- The...

17,000 rod rows, A substantial part of these are F3 selections from backcrossing projects, being given a final check for corjformity to type before bulking...

DescriptionGreater Prairie Chicken and Sharp-tailed Grouse Backcross (documentation) - 16853007877.jpg English: Dunn Ranch 3/27/15 Photos taken by Tom...

resistant to powdery mildew. crossed with the mildew-free plants, and backcrossing hastened the production of a variety No. 45 that combined the resistance...

of elements takes place in the germ-cells of the hybrid, consists in backcrossing the hybrid (Fi) to one of the parent stock, viz., to the not dominant...

which descended from a Border Leicester ram were backcrossed to a polled Rambouillet ram. The backcross offspring which have Targhee type fleeces (1/2 Blood)...

are studying hermaphroditic genetic mutant lines subject to extensive backcrossing, we are still generating thousands of random mutations per strain. While...

California by crossing California Common with a Turkistan selection and backcrossing to California Common. Caliverde is identical to California Common in...

regionally. These programs involve hand-crossing, testing for resistance, backcrossing to adapted parents, and arepetition of these steps several times before...

plans further ants. with the to each other as From attemjit to backcrossing, learn dominant and fer pheasant hvbrids. breed males and females...

for the flavanone aglycone. es it may are likely to result from backcrossing the tranges to By employing the general concepts of flavanone inheritance...

(Fig 4F, log-rank p = 7.2e-4). To further validate this finding, we backcrossed a loss-of-function p-element insertion in Pnt (PntKG04968, henceforth...

avoid introducing more genes for mosaic susceptibility through further backcrossing Populations of 86 lines to commercial varieties 'which are all susceptible...

produc¬ tion of disease-resistant strains and also for the perfection of a backcrossing technique whereby disease-resistant strains of existing varie¬ ties can...

essentially an Elgin wheat with the smut resistance of Hymar added by backcrossing. Brevor, a beardless common wheat with white chaff, has the combined...

males born alive have been sterile. Fertile males have been obtained by backcrossing with of crosses the parental species. The most important species cross...

crosses.^- nature, NORMAL STRAIN OF COMBINE 60 VARIETY CROSSING AND BACKCROSSING CREATE MALESTERILE STRAIN OF COMBINE 60 AND MULTIPLY BREEDING STOCK ...

Vector leafhoppers can move from surrounding vegetation into long backcrossing breeding program to transfer tolerance into commercial peach selections...

producing a vigorous sesquidiploid which can stabilize geneti¬ cally through backcrossing to either parent. Crosses with B. oleracea as the maternal parent are...

censored. 2.2. Drosophila lifespan assay Control wDah was derived by backcrossing w1118 into the outbred wild-type Dahomey background. The dfoxoΔ flies...

could take, normally, about 10 years. However, by speedup methods of backcrossing, resistant varieties suitable for commercial production could be ready...

to an extremely tight silk channel, has produced susceptible crosses. Backcrossing with 8 I-I and 471“U6 in hopes of producing a yellow hybrid with the...

generation of longleaf x loblolly pine, but are the result of recurrent backcrossing to either of the parent species. Some seedlings without a true grass...

disease-resistant versions of some of these varieties the acreage. produced through backcrossing were released in I963. New varieties with a higher oil content made the...

or (iii) a variant individual from plants of the initial variety, (b) backcrossing, or (c) transformation by genetic engineering. (5) Subsection (1) above...

hybrids by outcrossing to selected inbreds of desired character and backcrossing and/or selfing and selection; (3) introduce and study the adaptability...

Frontana and Kenya Farmer. Two rust resistant strains developed by backcrossing were combined to produce the Research Station, complex crossing new...

plants, so the gene pool a\'ailable to a breeder becomes unlimited. A backcrossing program, for example, that might take 8 to 10 generations could be accomplished...

DescriptionGreater Prairie Chicken and Sharp-tailed Grouse Backcross (documentation) - 17034425856.jpg English: Dunn Ranch 3/27/15 Photos taken by Tom...

DescriptionGreater Prairie Chicken and Sharp-tailed Grouse Backcross (documentation) - 17058943632.jpg English: Dunn Ranch 3/27/15 Photos taken by Tom...

susceptible singles to produce stop-gap hybrids until a recovered line backcrossing program could be completed. A list of all Northeast material tested...

of elements takes place in the germ-cells of the hybrid, consists in backcrossing the hybrid (Pj) to one of the parent stock, viz., to the not dominant...

and Barnes 1969, Barnes 1961, Pauley 1956). Although the occurrence of backcrossing and introgression has been suggested (Barnes 1961, Pauley 1956), they...

developed by the selection of soft kernels from field corn and repeated backcrossing with held corn. The three ears were selected in the field and. picked...

October 1948, Vol. XII, No. 10 By potato. tion, hybridization, and backcrossing, selec- varieties has been going on in Great Britain and in several...

several attempts to backcross the hybrids to red pine also have been unsuccessful. By contrast, the hybrids have been successfully backcrossed (mean 4.4 germinable...

consisted of comparisons among parent lines and lines recovered after backcrossing one or more times to the recurrent parent and selfing one or more times...

first and second generations were intermated, and then animals were backcrossed to obtain desirable combinations of characters. The breed traces to a...

selection of a variant individual from plants of the initial variety, backcrossing, transformation by genetic engineering, or other method. (4) Kind - The...

transferred resistance to our California Common type by crossing and backcrossing to Common. We also combined leafspot and mildew resistance in the program...

screw-worm flies. were examined for inheritable characters. Breeding and backcrossing studies with candidate mutants showed the presence of several strains...

seedling segregates from the imported hybrid; others may represent the backcross of the hybrid to P. occidentalis. London plane is now described in Bailey's...

hybrid produced from crossing B. socotrana and B. dreoei, with subsequent backcrossing of the hybrid to B. socotrana. The first crossing was performed in France...

virtually every characteristic of the American chestnut of the past. By backcrossing the American chestnut with the blight-resistant Chinese chestnut, the...

recessive. x b sni and The and PI factors for B factor. Both Sm, were backcrossed with show independent segregation involved the silks B sm -plant...

and spreading branch traits desired. A standard breeding program of backcrossing, intercrossing and selfing was carried out. Fifty selected inbreds were...

variations range has never been published. After several generations of backcrossing of /. X attenuata to /. cassine and /. opaca, it is doubtful that any...

with the Corps of This chestnut bur with seven nuts inside is from a backcross 15/16ths American chestnut and 1/16th Chinese chestnut. Kevin Wright...

and were inoculated with wildfire and mosaic at Lexington, Kentucky. Backcrossing to standard varieties and combination crosses were made to improve type...

and calving traits of bone for Tuli and Boran was less than that in backcross and F2 (eg.. Piedmontese-Angus X progeny of Belgian Blue sires (P< 05)...

wild varieties with KENAF (HIBISCUS CANNABINUS 11 L.) repeated backcrossing, the interspecific crossing of roselle with kenaf, and colchicine treatments...

DescriptionGreater Prairie Chicken and Sharp-tailed Grouse Backcross (documentation) - 16874190559.jpg English: Dunn Ranch 3/27/15 Photos taken by Tom...

seedling segregates from the imported hybrid: others may represent the backcross of the hybrid to P. occidentalis. London plane is now described in Bailey's...

five suc¬ cessive generations of controlled selffertilization or of backcrossing to a re¬ current parent with selection, or its equivalent, for specific...

selection of Lycopersicon hirsutum For three generations the F i was backcrossed and 'Walter'. to NC 50-7 with selection for early blight resistance (Exhibit...

selection of a variant individual from plants of the initial variety, backcrossing, transformation by genetic engineering, or other method. (4) Kind.- The...

the few males born alive have been Fertile males have been obtained by backcrossing with sterile. the parental species The most important species cross...

Acta Agronomica Sinica 12(4):255-259. Wang Jinling. 1986. Effect of backcrossing on overcoming viny and lodging habit of cultivated X wild and cultivated...

George L. Switzer (1952--). Pinus echinata and taeda (1949--): SH, backcrossing; (1952--): Rac. Pinus elliottii (1948--): Rac. MISSOURI, UNIVERSITY...

best adapted in Central and South Central Iowa. It is the result of a backcross of Lincoln x (Lincoln x Richland). Plant and seed characteristics of Ford...

crosses with at least eight races of rust. Then—at least three times—they backcross fully resistant plants to the commercial variety and retest the offspring...

to select for the linked allele lXj in the heterozygous state during backcrossing. T. Pfeiffer and D.F. Hildebrand.308 vi Results from crosses of low...

first and second generations were intermated, and then animals were backcrossed to obtain desirable combinations of charac10 : : : ■ : r iFigure...

Additional data are needed to characterize reproduction and calving traits of backcross and F2 (eg., Piedmontese-Angus X Piedmontese-Angus) progeny to assess...

consideration of Cohen d effect size [11], using much larger sample size and/or backcrossing transgenic animals on different background strains as control animals...

pollen from the natural hybrid was placed on Jeffrey pine conelets, and a backcross was produced. Jeffrey pine was known to be a preferred host of the weevil...

shortleaf and loblolly pine. Rows k and 7 are shortleaf loblolly hybrids backcrossed with loblolly. Row 3 is a shortleaf -loblolly hybrid, self fertilized...

—Minnesota No. 2 boar. Figure 28.—Minnesota No. 2 gilt. animals were backcrossed to obtain desirable combinations of characters. The breed traces to a...

>*6 now attempt to "boost" the blight resistan chestnut hybrids by backcrossing them with selected chestnut trees. Fortunately, in recent years, chest...

through at least one backcross to the later Corn Belt inbred to provide a satisfactory degree of earliness in inbreds derived from backcross. By adopting these...

first and second generations were intermated, and then animals were backcrossed to obtain desirable combinations of charac10 Figure 29.—Minnesota No...

evaluating the resistance to nematodes was the same Continuation of backcrossing resistant selecas that used in previous years e tions to So tuberosum...

Additional data are needed to characterize reproduction and calving traits of backcross and F2 (e.g., Piedmontese-Angus X Piedmontese-Angus) progeny to assess...

into which RFP-ProtB, which labels sperm heads red [5], was previously backcrossed. All flies were reared under standardized larval densities (approximately...

Iowa 1^3. It carries Oh26 is in a a restorer from Oh29 and has been backcrossed similar stage of development with a restorer Report on Seed Storage...

gracilis to be controlled by a single dominant in Morse and Cartter, by backcrossing 1937). (L73-1004; This gene has been R. L. Bernard, Patterned...

testing. It was obtained from a cross of N10 and Western Oilseeds Ik backcrossed to N10. The resistance of Western Oilseeds Ik to Phytophthora root rot...

which dilutes This hereditary unit must be recessive as the cross as a backcross of the first hybrid onto a Guernsey cow. Furthermore, sex (be sex-linked)...

Additional data are needed to characterize reproduction and calving traits of backcross and F-, (e.g., Piedmontese-Angus X Piedmontese-Angus) progeny to assess...

tomentosum cross exhibited antibiotic properties to pink bollworm larvae. A backcross of the cotton to its G. hirsutum parent showed no evidence of antibiotic...

Resistance in Stocks from Early-Generation Breeding" and including Fi, Fi backcross, and F 2 progenies, Combinations of all of these as well as local-origin...

Additional data are needed to characterize reproduction and calving traits of backcross and F2 (e.g., Piedmontese-Angus X Piedmontese-Angus) progeny to assess...

(electronic supplementary material, table S2). These original mutants were backcrossed with the Col-0 wild type three times. Following the instructions [37]...

(the hybrid between F. japonica var japonica and F. sachalinensis) and backcrossed plants” (Grimsby and Kesseli 2010). Japanese knotweed s.l. is an invasive...

mallards, certain game-farm mallards, hybrids between the two, and of the backcross of the hybrid to the wild type a re being studied to provide information...

forms of genetic manipulation, such as introducing exotic genes through backcross techniques or through genetic engineering, also might be evaluated. The...

(probably Ps3 '{doplea sp.) were brou'ghV "into the greenhouse and are being backcrossed to Vernal aria! some of the better selections made at the Laboratory...

Very likely, however, several generations of selection in filial or backcross generations will be required for the characteristics to become established...

hybrids more than conventional with corn and sorghum. Breeders began backcross- yield significantly ing genes from the only two sources of restoration...

royalsocietypublishing.org R. Soc. open sci. 1: 140187 [23] and were backcrossed for several generations on a C57BL/6J background. Genotype of MSTN−/−...

Additional data are needed to characterize reproduction and calving traits of backcross and F 2 (e.g., Piedmontese-Angus X Piedmontese-Angus) progeny to assess...

Forest and Range Expt. Sta. Res. Note 175k pp. LJBBY. W. J, 1958 (78) The backcross hybrid Jeffrey X (Jeffrey X Coulter) pine. Jour. Forestry 56(H): 8^0-842...

BY AIRCRAFT SPRAYING 2-4— D*. (GERMAN) THE CHARACTERISTICS OF FI AND BACKCROSS HYBRIOS BETWEEN HIGH LEUKAEMIA (AKR) AND AUTOIMMUNE ( NZB MOUSE STRAINS...

the job at a reasonable cost. The various systems mentioned are being backcrossed into suitable parental stock for use in making hybrids . Female Sterility...

output of large seed. yield, susceptibility to rust. we are using the backcross method to transfer rust resistance to the seed type. The first rust...

data are needed to characterize reproduction and calving traits of backcross Piedmontese-Angus progeny to assess X and F; (e.g., Piedmontese-Angus)...

Roberts, M. F. Tennant, M. E. Vanderhoof, D. M. Webb genes into commer- backcross the offspring with and then propagate enough seed for commercial job...

selection from a lowbush-highbush cross), and Weymouth, which is a second backcross to the highbush (JuneXCabot). Table 2 lists the varieties and gives an...

synthesize fertile types by colchicine treatment of initial hybrids & backcross them to Upland cottons; (5) investigate cyto logical mechanism in such...

Orlando laboratory. "These hybrids are now be- used to hybridize or backcross with citrus, such as sweet orange and grapefruit, to develop more cold-hardy...

insects. • - Greenhouse Sterility Studie s. From the intercrosses and backcross made during 1947-48 With six families, no clear-cut evidence of intra-...

established; also, to develop new varieties, using, where indicated, pedigree backcross and recurrent selection methods. We must state the number one objective...

the polyphenols and oils would be stantial crop, cut produced by a backcross between Century and the mutant line yields seed oil with about 6 percent...

but after the col- on parents and progenies grown fifth and sixth backcross generations, the Yugoslav scientists es- tablished lines with the dominant...

Experiment Station, College Station, Miss.; Pinus taeda x P. echinata backcrossed to each of parent species to compare survival, growth rate, and form...

for cytological and crossability studies at Beltsville. F-^, ? > 3^d backcross seed was obtained, as well as 25 combinations of inter2 specific crosses...

John W. , Spinning and fiber properties of Pima, SxP, and a Pima-SxP backcross. U. 5. Dept. Agr., Agr. lak'tg. Serv., Bur. Plant Indus., in cooperation...

K71002/Magnif 41, K7700108 K73557/Borah, K7900713 MSFRS Germplasm C.C. h -1977 Backcross Bemidwar [ I Source Canada USDA-MN ND USDA-MN ND SD SD SD SD SD N...

Dakota from a handpollinated cross between 'Valhalla' and 'Walsh' and a backcross to 'Valhalla.' The crosses were completed in 1965. The breeding history...

classified under the hybridization method are: (a) the pedigree method (b) backcross method (c) bulk method (d) multiple crosses (e) recurrent selection. Time...

Beverly Mock has injected BALB/c x (BALB/c x DBA/2 )F1 1st generation backcross mice with pristane and induced the expected 11-13?» plasmacytomas. She...

crop in the United A cross of Nebraska-10 and Western Oilseeds-14, backcrossed six dis- times to Nebraska-10, produced and 10. invaded the United...

1951* Dr* Joiies' cytosterility sources were used in a paired progeny backcross program* The object being to sterilize the most widely used, of the New...

respectively. From these crosses, plants of 133 F2 progenies and 34 backcross progenies, totaling over 7,000 plants, were spaced in the field in the...

Probably the factor came from the game, because group E was present in the backcross as well as in F2, and because these black birds are always stippled. The...

genomes, develop more efficient ways of using current methods such as backcross, recurrent, and pedigree 17 selections. For distantly related genomes...

resistance to transplantable genetic constitution of inbred, hybrid, and backcross responsible for the differences in susceptibility The development of...

large number of southern strains and many of the offspring have been backcrossed to Ogden. Prom these segregates, strains can be expected which will show...

produces sterile male progeny. Females, however, are fertile and can be backcrossed with tobacco budworm males for an ap¬ parently infinite number of generations...

significant increase in mortality] in fact, in one test it caused The backcross hybrid caused a significant a significant decrease. increase in one test...

Producing two generations a year (a winter generation in Mexico), Meyer backcrossed the G. armourianum x G. hirsutum hybrids twice to the upland parent...

originally used in the crosses. Jirst generation hybrids were subsequently backcrossed to one of their parent strains and this procedure is now being followed...

resistance of the smallfruited selections to large-fruited apples by a backcross breeding program. Progress has been rapid through co-operation with breeders...

canephora, seems promising. Plants from this hybridization have been backcrossed four times to the highyielding cultivar Mundo The novo. re- able...

Probably the factor came from the game, because group E was present in the backcross as well as in F 2 and because these black birds are always stippled. The...

been thoroughly ana- The lyzed. usual procedure and segregates backcross diallel crosses are also used to test the F 2 - and F 3 - progenies;...

tobaccos proved crossed with the cultivate*; tobacco Hesist J‘ p££b backcrossed to the cultivated parent s. i, tively short tine, resistant lines field...

chromosome 4 PCT suspected. susceptibility genes using the panel of typed backcross DNAs. She also has found genetic differences that influence PCT induction...

F5 or Fy. i|. Baclccrosses . At Beltsville, Maryland, an extensive backcross program is underway with winter barley. Economically desirable genes as...

representing materials of diverse origin was selectede The selections are being backcrossed to Vernal and Laboratory clones, and the first backcrcss generation will...

Fj. were in tho field. before in their first year's growth and were backcrossed crossed reciprocally in all combinations dupcombination was made reciprocal^...

selection from a lowbush-highbush cross), Weymouth, which is a second backcross to the highbush (June X Cabot), and the Angola, Croatan, Murphy, and Wolcott...

earworm; (8) characterization of a rickettsia-like organism as a factor in backcross sterility of tobacco budworm; and (9) a chemical taxonomic method to distinguish...

rigors of the inland environ¬ ment. He recommends that foresters either backcross the hybrid with the inland variety for a possible fast-growing, well-adapted...

Vincent R. Pantalone III, Richard F. Wilson, Yang De RAPP analysis using backcross-derived line in mapping genes for resistance to Heterodera olvcines 1...

the first crosses. The selections from the back crosses may be further backcrossed or they may be "selfed" — pollinated with their own pollen — in order...

Neither the have the pro- and productivity. The best plants from this backcross gave rise periment stations have seed for sale ^vill green-seeded Nemagreen...

mentioned in 1960 Annual Report, page 14, intergeneric hybrids were Six backcrossed to tall fescue. Approximately 95% survived the winter. hundred twenty-two...

American-produced varieties of cotton: Coker-Wilds, Sea Island, Pima, SXP, and Backcross (PllXSxP), the latter three, termed as American-Egyptian, were secured...

chromosome chromosomes. A hybrid exhibiting desirable traits has to be backcrossed with parents over several generations before it will produce uniform...

Drosophila: differential gene and allele-specific expression analysis of backcross males. Heredity 117(2):100–108. Camacho C, et al. 2009. BLASTþ: architecture...

functional competence of thjmiic and peripheral y5 T cells (of further backcrossed mice) revealed that these cells can fully mature in Class I"'" mice....

helps the commercial and public breeders decide whether to release backcross fully resistant plants to the the beans as a new, rust-resistant commercial...

the resulting hybrids themselves survive and reproduce. If the hybrids backcross with one or both of the parental species, genetic introgression occurs...

station; and Miomai’k oats, developed by the South Dakota station from a backcross of a selection of logold X Markton to Markton, an early maturing white...

common throughout Utah where their ranges overlap. Also, many F2 and backcross segregants are common. Careful examination reveals cliffrose traits in...

Alfalfa Development of Disease Resistance in Alfalfa By a modified backcross program, disease resistance to two foliar diseases was introduced into...

recessive hypothesis for the control of this phenomenon was tested by F2 and backcross methods. No test of differences Deviations in rate of occurrence among...

varieties of the cultivated species tuberosum and then Solanum to backcross the resulting progenies for several generations to similar varieties...

between Fairfax and a native Rocky Mountain strawberry and the progeny backcrossed to Fairfax. Sioux has proved to be fully winter-hardy without protection...

grown (Harrow) were lines In 1941 one of these selected. lines was backcrossed to Mandarin and from this a number of lines were selected in 1945, among...

S. Certified crossbred, and U. S. Approved incrossbred, respectively. Backcross and other matings of crossbred stock not covered by these specific provisions...

URUGUAY AND TRANSFER. 05564 THE ESTIMATION OF RECOMBINATION VALUES IN BACKCROSS DATA WHEN PENETRANCE IS INCOMPLETE, WITH A SPECIAL REFERENCE TO ITS APPLICATION...

using the hybrids of the two species. Only one of these was productive, a backcross of a glo.hr um x granarium male to a glahrum female. Larvae from this...

Grain Evergreen, Country Gentleman, and Golden Cross Bantam have been backcrossed to the Guam parent. It is hoped to incorporate into a sweet strain the...

As stated in the previous report lesions of interest were obtained in backcross mice procured by mating strain I to Ft hybrids obtained from strain I...

selection from a lowbush-highbush cross), and Weymouth, which is a second backcross to the highbush (JuneXCabot). Table 2 lists the varieties and gives an...

and pairing occurred largely as bivalents. obtained from F^, F3, and backcross generations fit a tetraploid model much better than either disomic, hexasomic...

virulence differed for different alternate hosts. . . TRITICI ^ been backcrossed into the susceptible Australian CVS. 'Gamenya' and 'Tincurrin'. FUTURE...

data are not yet complete. A ebony line is being established so that backcross data may be obtained. 7. BECKHAM, C. M. Pelleted cotton squares and other...

the McMurachy and Exchange varieties. Selections from this cross were backcrossed to Redman three times—in 1944,1945, and 1946. Selkirk was released to...

sterile and that hybrid females are fertile. The hybrid females that backcross to males of either species produce the same type of sterile males and...

reproduction weevil. The most outstanding resistant hybrid yet produced is a backcross obtained by pollinating Jeffrey pine cones with the pollen of a natural...

of colour suggests that compatible genetic combinations in hybrids or backcrossed individuals may be rarely acquired. Thus, one hypothesis is that those...

includes adapted varieties Clark, Harosoy and Lee, into which have been backcrossed single genes or combina¬ tions of genes. with Chippewa, c) interest...

earlier, follox^ed by Hereford, Brangus, and Brahman, respectively. Among backcross heifers, three-quarter Shorthorn heifers reached puberty earlier than...

the first artificial longleaf x slash pine cross, and 2 years later he backcrossed Sonderegger pine with loblolly and with longleaf pollen. Wakeley did...

developed by selection at the Biggs station from the cross Caloro X Calady backcrossed to Caloro. It is a medium-grain, partly awned variety, identical in growth...

octoploid triticales. She seems to favor the octoploids, which are being backcrossed to wheat to develop cold-tolerant strains of wheat. The research facilities...

interspecific crosses between Heliothis vi rescens and H. Ann. subflexa backcrossed for three generations to H. subflexa. H^. hybrid; 737-740. 420 EN82 bioassay;...

selected in 1968 at the University of two cycles of reselection, backcrossed to original clone production and 1019 has demonstrated greater tiller...

Some of the to the original first- generation trees have been backcrossed Chinese parent, and the progeny is practi- cally as resistant to...

Lincoln has been crossed with an early variety from Canada — Pagoda — backcrossed to Lincoln to secure a strain with the desirable characters of Lincol-n...

antigen-specific, appears from cross breeding experiments (in which the backcross results in good producers, poor producers and intermediate producers)...

others were found to have 35 or 42 chromosomes. These plants will be backcrossed to tall fescue and intercrossed. Syn 1 9 A number of samples of hybrids...

infection by Colletotrichum graminicolum , were selfed to produce seed for backcross studies in 1967* a. 6 Genetic Studies Evaluation of the progeny of...

stainability More fertile plants appeared in somewhat larger numbers in advanced backcross generations than in early ones. Plants with at least 20% completely stained...

types are now in the third or Some yield tests in 1966 indicated later backcross generations. yields within 10 to 15 percent of present commercial hybrids...

evaluate the maternal performance of the six single crosses by producing backcross calves using both single cross heifers mated to straight bred bulls and...

fired], FarringTON 2, three cinquefoils, two and one, Farrington 4. a Backcross engrailed between four roundles, CLAYTON. ; ; ground as in obv. N...

Biggs Rice Field Station, Biggs, Calif., from the cross Caloro X Calady backcrossed to Caloro. It is a medium-grain, partly awned variety very similar in...

sizeable populations of hybrid segregants. More commonly, the hybrids backcross to the parents, providing genetic introgression from one species to the...

(G-975) Handcm Sampling and the Disoribution of Phenotypes on Ears of Backcrossed riaize. George F. Sprague. Jour. Agr. Sesearch 5l(8); 751-758* figs....

subjected to colchicine treatment. Dr. R. W. Allard of Madison crossed and backcrossed the amphiploid with a selection from 111, No.lXChinese, and seeds from...

Howard Johnson between a Brazilian collection and a local strain and backcrossed to the local strain. One of the blocks contains selections made by Dr...

ing degrees of chlorosis. parent results Based on limited data, one backcross in normal green color of most plants. to either 21 The successful...

.9 P69P) Stability of chloroplastic triazine resistance in rutabaga backcross generations. 0057 0063 'NuMex BR1' onion (Cultivar development, pink...

mothers. Future work on the M. m. domesticus/M. spretus cross will use backcross mapping to identify genomic intervals that influence maternal behaviour...

262977. D-211. Inst, of Hort. Plant Breeding, Wageningen. A cross and backcross of types, twice tested with Colletotrichum lindemuthianum (Sacc. & Magn...

crossing it to normal self-fertile parents. All Fj plants were normal, Backcross, F 2 and F3 progenies will be obtained. In two bromegrass yield trials...

bromegrass synthetics and varieties in two trials completed in 1976. Fg and backcross seeds were produced for the cross rolled-leaf mutant x self-fertile normal...

Campbell, M. E. Spinning and fiber properties of Pima, SxP and a PimaSxP backcross. With others 2703 Spinning and fiber properties of six American .upland...

nonhybrid seeds. This may represent a growth differences the first year. backcross, as the male parent had some sugar maple characters . . — Hybridity...

lines, with the exception of the "normal” forms, were derived by the backcross method by R. L. Bernard, from whom our material was obtained. Agronomic...

Leicester ram on Targhee and Rambouillet ewes. The descendants have been backcrossed to Rambouillet rams so that only those with Targhee type (half-blood)...

XVI, XVII Allard, R.W. 1960. Principles of Plant Breeding. Chapt. 14. Backcross breeding. John Wiley and Sons. N.Y. IV Allbee, B.H. 1905. Chestnuts a...

ability 1965. of Bulgarian White and Swedish Landrace pigs and their first backcross generation. Eng. Sum. (Bulgar.) Zivot. Nauk. 2:369-374. (ABA 34:1359)...

da riproduzione, incroci two-breed tra due di queste razze, incrocio backcross fra tali razze, incroci three-breed tra le razze della generazione F1...

bred at the same time in order to have within year comparisons between backcross and purebred animals. Two or three years will be devoted to this work...

Tissue in Interspecific Sunfish (Centrarchidae) Hibrids and Their Backcross Progeny. Biochem. Genet. 22: 931-956. Philipp, D. P., W. Childers and...

initial crosses involving these varieties is considered to be remote, the backcross method of breeding appears to be the most satisfactory approach to the...

includes adapted varieties Clark, Harosoy and Lee, into which have been backcrossed single genes or combinations of genes. Also included are certain genes...

transferring nematode resistance from species to tetraploid selections by the backcross method. Over 90 clones have been selected for further evaluation from...

and BI3 were each crossed to seven Stiff Stalk high oil selections and backcrossed once to these selections. Five high oil, waxy selections from the BI3...

long-headed dwarfs. In ad dition, there is a sizable F2 progeny and ¥\ progeny backcrossed to both long-headed and short -headed dwarf parents. The plan is to pub...

Popcorn) x B73] x B73 were evaluated at two locations. Ten entries from each backcross that rated the lowest in virus injury were retained in the breeding program...

waxy strain. Since then the T/axj^" strains of the four lines have been backcrossed to the parent lines to regain their qualities of a good commercial com...

threefourths , from the IJ.S* variety Lancaster Suracrop. The original backcross was random mated several generations followed by one cycle of recurrent...

Results could later be compared species such as raphanifolium , S. one backcross, nine Pis were tested using a 7x7 lattice buksovii S. sparsipilum...

introgress into one of the parent species’ genomes through repeated backcrossing. Finally, hybrids may form novel lineages that are reproductively isolated...

introgress into one of the parent species’ genomes through repeated backcrossing. Finally, hybrids may form novel lineages that are reproductively isolated...

and the SDL. Male F1 were we/+; M/m which were backcrossed to virgin HWE females. Subsequent backcross progeny were scored for sex and eye color. Of the...

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Mendelsche Regeln Genetik Biologie Rückkreuzung I, the copyright holder of this work, hereby publish it under the following license: English author name...

I, the copyright holder of this work, hereby publish it under the following licenses: This file is licensed under the Creative Commons Attribution-Share...

I, the copyright holder of this work, hereby publish it under the following license: This file is licensed under the Creative Commons Attribution-Share...

I, the copyright holder of this work, hereby publish it under the following license: This file is licensed under the Creative Commons Attribution-Share...

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English determination method or standard: SHA-1...

English: Hybrid between a western-coyote female and a male western wolf backcrossed with that wolf by artificial insemination. Animal is 21-week-old female...

(7967725254).jpg Tower Grove Park 9/9/12 This one might have a Lawrence type backcross going on? Date 9 September 2012, 19:18 Source Golden-winged Warbler -...

hermaphrodites (self-cross) and F1 males backcrossed to hermaphrodites of the original transgenic line (backcross). For each type of transgene, 4 to 13 independent...

English: Hybrid between a western-coyote female and a male western wolf backcrossed with that wolf by artificial insemination. Animal is 1-year-old male...

new populations, it was noted that after four or five generations of backcrossing, hybrids are visually indistinguishable from the non-hybridized parental...

jackal. Thus, it was hypothesized that it could have originated through a backcross between the putative hybrid female A and a male Istrian shorthaired hound...

氣壓と風速の微細記綠〓就〓て 熱線風速計〓就〓て 要録 稻作收量審查〓於ける〓摺步合の算定法 o噴霧口 暖地〓於ける食糧增產と稻の秋落〓問題 抄録 作物育種〓於けるbackcross の利用〔f.n.briggs〕 種子の發芽〓及〓す水壓の影響〔rivera〕 ring-spot 罹病より所謂囘復せる煙草〓於ける實驗的病徵發現と獲得免疫〓保持〔valleau...