scholarly journals Effective Nutrient Combination for Advance Capsularis Breeding Line BJC-5050 Production

2019 ◽  
Vol 5 (1) ◽  
Author(s):  
Md. Marfudul Hoque ◽  
Md. Saheb Ali ◽  
Md. Abdul Alim ◽  
Bornali Mostofa ◽  
Md. Mahbubul Islam
Keyword(s):  
Breeding Line

scholarly journals Independent Resistant Reactions Expressed in Root and Tuber of Potato Breeding Lines with Introgressed Resistance to Meloidogyne chitwoodi

2009 ◽  
Vol 99 (9) ◽  
pp. 1085-1089 ◽  
Author(s):  
C. R. Brown ◽  
H. Mojtahedi ◽  
L.-H. Zhang ◽  
E. Riga
Keyword(s):  
Genetic Factors ◽  
Dominant Gene ◽  
Breeding Line ◽  
Single Dominant Gene ◽  
Solanum Bulbocastanum ◽  
Chromosome 11 ◽  
Meloidogyne Chitwoodi ◽  
Tuber Resistance ◽  
Advanced Backcross ◽  
Resistance Breaking

Resistance to Meloidogyne chitwoodi was introgressed from Solanum bulbocastanum into the cultivated gene pool of potato. A single dominant gene is responsible for resistance to race 1 reproduction on the root system. An additional form of resistance was discovered in certain advanced backcross clones. A BC5 clone, PA99N82-4, resisted invasion of tubers by available nematode juveniles whether supplied by weeds or challenged by several root resistance-breaking pathotypes. This tuber resistance is inherited as a single dominant gene and is linked to RMc1(blb). Because this gene has been mapped to chromosome 11, tuber resistance genetic factors are inferred to be on the same chromosome in coupling phase. Among 153 progeny derived from crosses with PA99N82-4, 42 recombinants, comprising both resistant root/susceptible tuber and susceptible root/resistant tubers, were found while other progeny were doubly resistant (like PA99N82-4) or doubly susceptible. Therefore, the existence of two linked genetic factors controlling independently expressed traits is confirmed. The combination of the two phenotypes is likely to be a sufficient level of resistance to avoid tuber damage from circumstances that provide exogenous juveniles proximal to the tubers in the soil. These factors are weed hosts of M. chitwoodi host races and pathotypes of M. chitwoodi that overcome RMc1(blb). Under field conditions, where a resistance-breaking pathotype of M. chitwoodi was present, tuber-resistant PA99N82-4 breeding line produced tubers which were commercially acceptable and not culled. A related breeding line, root resistant but tuber susceptible, and Russet Burbank were severely tuber damaged and commercially unacceptable.

scholarly journals Significance of pH-value for meat quality of broilers: Influence of breed lines

2013 ◽  
Vol 67 (1-2) ◽  
pp. 67-73 ◽  
Author(s):  
M. Ristic ◽  
K. Damme
Keyword(s):  
Meat Quality ◽  
Ph Value ◽  
Storage Period ◽  
Breeding Line ◽  
Breast Meat ◽  
Ph Values ◽  
And Gender

For determination of poultry quality shortly after slaughtering, physical criteria (pH-value, conductivity, colour, juice retention) are of importance. However, they are affected by breeding, transport, cooling and the storage period. PH-values of breast meat (genetically structured material) were recorded shortly after slaughtering (15 min p.m.) and differences between breeding line and gender were found (n=5109). The pH1-values ranged from 5.50 to 6.79. Male broilers showed significantly lower pH1-values than female ones (6.02:6.10). There were also significant differences concerning breeding line and gender. Meat quality (PSE, DFD) of broilers can be recorded quickly and accurately determining the pH1-value of breast meat. Threshold ranges to be considered are ? 5.8 (PSE), 5.9-6.2 (standard meat properties) and ? 6.3 (DFD). This classification is not to be compared to the deviation of pork.

scholarly journals New Alleles, rkcd and rkp, at the Red Kidney Locus for Seedcoat Color in Common Bean

2003 ◽  
Vol 128 (4) ◽  
pp. 552-558 ◽  
Author(s):  
Mark J. Bassett ◽  
Phillip N. Miklas
Keyword(s):  
Phaseolus Vulgaris ◽  
Common Bean ◽  
Gene Symbol ◽  
Recurrent Parent ◽  
Breeding Line ◽  
Genetic Investigation ◽  
Dry Bean ◽  
Pink Color ◽  
Growing Conditions ◽  
New Alleles

Among light red and dark red kidney common bean (Phaseolus vulgaris L.) varieties, pink seedcoat color (light red kidney) is dominant to dark red, but when Red Mexican varieties (with dark red seedcoats) are crossed with dark red kidney varieties, dark red seedcoat is dominant to the pink segregants observed in an F2 population. A genetic investigation of this reversal of dominance was performed by making crosses in all combinations among standard varieties of the four recessive-red market classes—Light Red Kidney `California Early Light Red Kidney', Pink `Sutter Pink', Red Mexican `NW 63', and Dark Red Kidney `Montcalm'—and observing segregation for seedcoat colors in F2 and F3 progenies. The data were consistent with the hypothesis that `NW 63' carries a new allele at Rk, viz., rkcd, where cd stands for convertible dark red kidney. Thus, C rkcd expresses dark red kidney seedcoats and cu rkcd expresses pink seedcoats. Also, C B rkcd expresses garnet brown seedcoats, whereas C B rkd expresses liver brown seedcoat color. Thus, we propose the gene symbol rkcd for the Rk locus gene in `NW 63'. The rk gene from Light Red Kidney `Redkloud' and `Sutter Pink' was backcrossed (with cu b v) into the recurrent parent 5-593, a Florida dry bean breeding line with seedcoat genotype P [C r] J G B V Rk. In the F2 progenies of BC2 to 5-593, the cu b v rk segregants from `Redkloud' gave true pink seedcoats, whereas those derived from `Sutter Pink' gave consistently very weak pink color under humid Florida growing conditions. We propose the gene symbol rkp, where p stands for pale pink, for the distinctive rk allele in `Sutter Pink'. The more general implications of the above findings were discussed.

Breeding Line Selection Based on Multiple Traits

Crop Science ◽  
2008 ◽  
Vol 48 (2) ◽  
pp. 417-423 ◽  
Author(s):  
Weikai Yan ◽  
Judith Frégeau-Reid
Keyword(s):  
Breeding Line ◽  
Multiple Traits ◽  
Line Selection

scholarly journals Influence of Soybean Cropping Sequences on Seed Yield and Female Index of the Soybean Cyst Nematode

Plant Disease ◽  
1998 ◽  
Vol 82 (6) ◽  
pp. 615-619 ◽  
Author(s):  
Lawrence D. Young
Keyword(s):  
Soybean Cyst Nematode ◽  
Cyst Nematode ◽  
Resistant Cultivar ◽  
Breeding Line ◽  
Sources Of Resistance ◽  
Resistant Cultivars ◽  
Cropping Sequence ◽  
Moderately Resistant ◽  
Different Sources ◽  
Female Index

Several soybean (Glycine max) cropping sequences were planted for 12 years in a field that, at the beginning of the test, was infested with race 14 of the soybean cyst nematode, Heterodera glycines. Continuous soybean cropping sequences included H. glycines-susceptible cultivars Forrest, J82-21, Peking × Centennial breeding line, and moderately resistant cultivars Bedford and J81-116. Forrest treated with aldicarb or pentachloronitrobenzene (PCNB) plus metalaxyl and resistant breeding line JS83-236 followed by resistant cultivars Cordell and Hartwig were additional continuous soybean sequences. Rotations included two sequences each of Bedford with J81-116 or J82-21, and three sequences of Bedford with corn (Zea mays) and susceptible Essex soybean. Rotations of Bedford, corn, and Essex had 12-year mean yields significantly greater than continuous Bedford or Forrest. The female index (FI) of H. glycines on five cultivars and lines was used to bioassay changes in parasitic potential in each cropping sequence. The FI on Bedford bioassay plants increased significantly over time for all field treatments involving Bedford. When J82-21 was the bioassay plant, FI decreased significantly in treatments involving Bedford. There were no significant changes in FI for any treatment when Forrest, J81-16, and Peking were used as bioassays. Rotations of soybean cultivars with different sources of resistance and rotations of resistant and susceptible cultivars with a nonhost crop were not successful practices to manage the nematode's ability to parasitize the resistant cultivar Bedford. However, rotation of resistant and susceptible cultivars with a nonhost crop produced greater mean soybean yields and slowed the shift toward greater parasitism of the resistant cultivar sufficiently to warrant adoption of this practice.

Characterization of the Powdery Mildew Resistance Gene in Wheat Breeding Line KN0816 and its Evaluation in Marker-Assisted Selection

Plant Disease ◽  
2021 ◽  
Author(s):  
Wenrui Wang ◽  
Huagang He ◽  
Huiming Gao ◽  
Hongxing Xu ◽  
Wenyue Song ◽  
...  
Keyword(s):  
Powdery Mildew ◽  
Resistance Gene ◽  
Marker Assisted Selection ◽  
Powdery Mildew Resistance ◽  
Wheat Breeding ◽  
Agronomic Performance ◽  
Breeding Line ◽  
Powdery Mildew Resistance Gene ◽  
Mildew Resistance

Wheat powdery mildew, caused by Blumeria graminis f. sp. tritici (Bgt), is a destructive disease seriously threatening yield and quality of common wheat (Triticum aestivum L., 2n=6x=42, AABBDD). Characterization of resistance genes against powdery mildew is useful in parental selection and for developing disease resistant cultivars. Chinese wheat breeding line KN0816 has superior agronomic performance and resistance to powdery mildew at all growth stages. Genetic analysis using populations of KN0816 crossed with different susceptible parents indicated that a single dominant gene, tentatively designated PmKN0816, conferred seedling resistance to different Bgt isolates. Using a bulked segregant analysis (BSA), PmKN0816 was mapped to the Pm6 interval on chromosome arm 2BL using polymorphic markers linked to the catalogued genes Pm6, Pm52, and Pm64, and flanked by markers CISSR02g-6 and CIT02g-2 both with genetic distances of 0.7 cM. Analysis of closely linked molecular markers indicated that the marker alleles of PmKN0816 differed from those of other powdery mildew resistance genes on 2BL, including Pm6, Pm33, Pm51, Pm64, and PmQ. Based on the genetic and physical locations and response pattern to different Bgt isolates, PmKN0816 is most likely a new powdery mildew resistance gene and confers effective resistance to all the 14 tested Bgt isolates. In view of the elite agronomic performance of KN0816 combined with the resistance, PmKN0816 is expected to become a valuable resistance gene in wheat breeding. To transfer PmKN0816 to different genetic backgrounds using marker-assisted selection (MAS), closely linked markers of PmKN0816 were evaluated and four of them (CIT02g-2, CISSR02g-6, CIT02g-10, and CIT02g-17) were confirmed to be applicable for MAS in different genetic backgrounds.

scholarly journals RAPD-based analysis of differences between male and female genotypes of Asparagus officinalis

2012 ◽  
Vol 39 (No. 1) ◽  
pp. 33-37 ◽  
Author(s):  
Y. Ii ◽  
A. Uragami ◽  
Y. Uno ◽  
M. Kanechi ◽  
N. Inagaki
Keyword(s):  
Molecular Markers ◽  
Sex Determination ◽  
Genomic Dna ◽  
Asparagus Officinalis ◽  
Breeding Line ◽  
Male And Female ◽  
Future Studies ◽  
Random Primers

Asparagus (Asparagus officinalis L.) plants are dioecious. All-male cultivars are desired because of their higher yields. To increase the proportion of male individuals planted in the field and expedite the breeding of all-male cultivars in asparagus, development of generally applicable molecular markers to distinguish male and female individuals is required. Bulked genomic DNA samples from ten male (XY) and ten female (XX) plants was screened with 10-bp random primers. Of the 188 primers tested, the primer T35R54 produced a 1600-bp fragment observed only in male individuals. The specificity of this T35R54-1600 marker was verified using DNA from one supermale (YY) and one female (XX) breeding line and their four F<sub>1</sub> progenies (XY). The T35R54-1600 marker fragment was observed in both supermale and all-male lines. The sequence of the T35R54 primer (5'-TTCACGGTGG-3') was absent among the sequences of primers or amplified fragments from previous studies. Therefore, this marker could be useful as a sex-related marker in future studies to increase the reliability of sex determination in asparagus.

scholarly journals Plant growth and physiological quality of quinoa (Chenopodium quinoa Willd) seeds grown in Southern Rio Grande do Sul, Brazil

2019 ◽  
pp. 678-682
Author(s):  
Rafael De Oliveira Vergara ◽  
Andréa Bicca Noguez Martins ◽  
Tiago Pedó ◽  
Aline Klug Radke ◽  
Gizele Ingrid Gadotti ◽  
...  
Keyword(s):  
Dry Matter ◽  
Chenopodium Quinoa ◽  
Rio Grande ◽  
Temperate Climate ◽  
Initial Growth ◽  
Breeding Line ◽  
Rio Grande Do Sul ◽  
Area Index ◽  
Physiological Quality

Quinoa (Chenopodium quinoa Willd) an annual grain crop belonging to the Amaranthacea family is the only vegetable food that contains all essential amino acids, micronutrients and vitamins. The study aimed to evaluate the performance, growth and seed physiological quality of two genotypes of quinoa in Southern Rio Grande do Sul region. The cultivar BRS Piabiru and one breeding line were grown at green house. The design was completely randomized with four replications and five harvest times during the vegetative stage of the crop. The variables were shoot length, number of leaves, leaf area index, dry matter of aerial parts, dry matter of root and total dry matter of plant. It was concluded that the line and BRS Piabiru have slow initial growth in the first 30 days and strong growth up to 120 days. The breeding line and commercial cultivar showed the same potential for seed production in the temperate climate of this region.

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