scholarly journals Genetic analysis of agronomical traits in recombinant inbred lines of cowpea (Vignaunguiculata(L.) Walp.)under two water regimes.

2015 ◽  
Vol 5 (1) ◽  
pp. 578-590
Author(s):  
Charlotte TONESSIA ◽  
N'Dri KOUASSI ◽  
Ndiaga CISSE ◽  
Severin Aké
Keyword(s):  
Genetic Variation ◽  
Recombinant Inbred ◽  
Agronomic Traits ◽  
Average Distance ◽  
Recombinant Inbred Lines ◽  
Inbred Lines ◽  
Snp Markers ◽  
Linkage Groups ◽  
Water Regimes ◽  
Agronomical Traits

Single nucleotide polymorphism (SNP) markers were used to develop a genetic-linkage map and to identify QTLsinvolved in the genetic variation of agronomical traits in cowpeaunder two water regimes. A total of 1536 SNP GoldenGate assay were used to screen for polymorphism in a cowpea population of recombinant inbred lines. A total of 299 SNP markers amplified polymorphic products of which 228 mapped to the 11 cowpea linkage groups with an average distance of 6.5 cM between markers. The new SNP genetic map with a total length of 1281,8 cM were aligned with the consensus cowpea map allowing filling some gaps, which will increase QTLs analysis. A total of 31 QTLs affecting agronomic traits were identified and mapped to cowpea genomic regions. Among them 45% explaining from 3 to 35% of genetic variation were detected for both water conditions. Co-locations between QTLs were identified on several linkage groups among them QTLs affecting harvest index (HI) and grain yield suggesting their common genetic bases. Because, HI has been shown as the most stable and highly correlated parameter with cowpea yield under stress; our results will enable the efficiency of MAS and enhance genetic progress in cowpea.

scholarly journals Identification of QTL Underlying Seed Micronutrients Accumulation in ‘MD 96-5722’ by ‘Spencer’ Recombinant Inbred Lines of Soybean

2017 ◽  
Vol 1 (3) ◽  
pp. 39-49 ◽  
Author(s):  
Nacer Bellaloui ◽  
Laila Khandaker ◽  
Masum Akond ◽  
Stella K. Kantartzi ◽  
Khalid Meksem ◽  
...  
Keyword(s):  
Recombinant Inbred ◽  
Recombinant Inbred Lines ◽  
Inbred Lines ◽  
Snp Markers ◽  
Linkage Groups ◽  
Seed Industry ◽  
Similar Region ◽  
Nutritional Qualities ◽  
Genetic Mechanisms ◽  
Nutritional Needs

Genetic mapping of quantitative trait loci (QTL) associated with seed nutrition levels is almost non-existent. The objective of this study was to identify QTLs associated with seed micronutrients (iron, Fe; zinc, Zn; bororn, B; manganese, Mn; and copper, Cu) accumulation (concentration) in a population of 92 F5:7 recombinant inbred lines (RILs) that derived from a cross between MD 96-5722 (MD) and ‘Spencer’. For this purpose, a genetic linkage map based on 5,376 Single Nucleotide Polymorphism (SNP) markers was constructed using the Illumina Infinium SoySNP6K BeadChip array. The RILs were genotyped using 537 polymorphic, reliably segregating SNP markers. A total of 23 QTLs for micronutrients Fe, Zn, B, Mn, and Cu have been identified and mapped on eight linkage groups (LGs) of the soybean genome. Five QTLs were detected for Fe (qIRO001- qIRO005) on LGs N, A1, K, J, and G. Seven QTLs for Zn (qZIN001-qZIN007) on LGs D1a (Chr 1), N (Chr 3), F (Chr 5), B2 (Chr 14), J (Chr 16), A1 (Chr 5), and K (Chr 9). Two QTLs for B (qBOR001 and qBOR002) were detected on LGs N and A1. Four QTLs were detected for Mn (qMAN001-qMAN004) on LGs N, A1, K, and J, and five QTLs were detected for Cu (qCOP001- qCOP005) on LGs N, A1, K, J, and G). It was observed that the four QTLs for Zn, Cu, Fe, and Mn on LGs N (Chr 3), LG A1 (Chr 5), and LG J (Chr 16) were clustered in a similar region of the linkage groups, suggesting possible shared physiological and genetic mechanisms. The QTLs detected in this study are novel and will contribute to our understanding of the genetic basis of seed mineral nutrition. This research would allow breeders to efficiently select for higher seed nutritional qualities to meet the seed industry and human and livestock nutritional needs.

QTL analysis of agronomic traits in recombinant inbred lines of sunflower under partial irrigation

2011 ◽  
Vol 5 (2) ◽  
pp. 135-146 ◽  
Author(s):  
P. Haddadi ◽  
B. Yazdi-samadi ◽  
M. R. Naghavi ◽  
A. Kalantari ◽  
P. Maury ◽  
...  
Keyword(s):  
Qtl Analysis ◽  
Recombinant Inbred ◽  
Agronomic Traits ◽  
Recombinant Inbred Lines ◽  
Inbred Lines

scholarly journals Genetic variation in β-adrenergic receptors in mice: A magnesium effect determined by a single gene

1983 ◽  
Vol 42 (2) ◽  
pp. 159-168 ◽  
Author(s):  
Jasna Markovac ◽  
Robert P. Erickson
Keyword(s):  
Genetic Variation ◽  
Recombinant Inbred ◽  
Adrenergic Receptors ◽  
Recombinant Inbred Lines ◽  
Single Gene ◽  
Inbred Strains ◽  
Inbred Lines ◽  
Inbred Strains Of Mice ◽  
Potent Antagonist ◽  
Β Adrenergic Receptors

SUMMARYGenetic variation in the amount of binding of dihydroalprenolol (a potent antagonist) to hepatocyte β-adrenergic receptors has been observed among inbred strains of mice. This variation is attributed to a differential effect of magnesium on the receptors between the high and low binding strains. Evidence for a single gene controlling the magnesium effect on dihydroalprenolol binding to β-adrenergic receptors was found using recombinant inbred lines between the high and low strains. We suggest the provisional gene symbol Badm.

scholarly journals QTLs for agronomic traits detected in recombinant inbred lines derived from a bread wheat × spelt cross

2018 ◽  
Vol 68 (5) ◽  
pp. 587-595 ◽  
Author(s):  
Yuki Sakai ◽  
Liangzi Cao ◽  
Ryosuke Funata ◽  
Takatou Shiraishi ◽  
Koki Yoshikawa ◽  
...  
Keyword(s):  
Bread Wheat ◽  
Recombinant Inbred ◽  
Agronomic Traits ◽  
Recombinant Inbred Lines ◽  
Inbred Lines
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