Phenotypic characterization and genetic dissection of nine agronomic traits in Tokachi nagaha and its derived cultivars in soybean (Glycine max (L.) Merr.).
By using the soybean founder parent Tokachi nagaha and its 137 derived cultivars as materials, a genome-wide association analysis was performed to identify the single nucleotide polymorphisms (SNPs) underlying soybean yield and quality related traits at two planting densities. Results of ANOVA showed that genotype, environment, and genotype by environment interaction effects were all significant for each trait. The Tokachi nagaha-derived soybean population could be divided into two subpopulations based on molecular data, and accessions in each subpopulation were almost all from the same Chinese province. Relatedness was detected between pair-wise accessions within the population. Linkage disequilibrium was obvious and the level of intra-chromosome linkage disequilibrium was about 8370kb. A total of 40 SNPs with significant signal were detected and distributed across 18 chromosomes. Some SNP markers were located in or near regions where QTLs have been previously mapped by linkage analysis. Nineteen SNPs were identified both in low- and high- density planting treatments, indicating those loci were common and sTable Sixteen SNPs were co-associated with two or more different traits, suggesting that some of the QTLs/genes underlying those identified SNPs were likely to be pleiotropic.
['Liu|Zhangxiong|Z|', 'Li|Huihui|H|', 'Fan|Xuhong|X|', 'Huang|Wen|W|', 'Yang|Jiyu|J|', 'Wen|Zixiang|Z|', 'Li|Yinghui|Y|', 'Guan|Rongxia|R|', 'Guo|Yong|Y|', 'Chang|Ruzhen|R|', 'Wang|Dechun|D|', 'Chen|Pengyin|P|', 'Wang|Shuming|S|', 'Qiu|Li-Juan|LJ|']
D000383:Agriculture D000704:Analysis of Variance D002681:China D002874:Chromosome Mapping D032461:Chromosomes, Plant D018556:Crops, Agricultural D004777:Environment D017343:Genes, Plant D056726:Genetic Association Studies D008040:Genetic Linkage D058685:Genetic Pleiotropy D018745:Genome, Plant D055106:Genome-Wide Association Study D005838:Genotype D015810:Linkage Disequilibrium D010641:Phenotype D020641:Polymorphism, Single Nucleotide D040641:Quantitative Trait Loci D019655:Quantitative Trait, Heritable D013025:Soybeans D013045:Species Specificity
Agronomic traits Cultivars Soybean Genome-wide association mapping