Nucleotide diversity patterns of three divergent soybean populations: evidences for population-dependent linkage disequilibrium and taxonomic status of Glycine gracilis.

ABSTRACT: The level of linkage disequilibrium (LD) is a major factor to determine DNA polymorphism pattern of a population and to construct high-resolution maps useful in localizing and gene cloning of complicated traits. Here, we investigated LD level of three soybean populations with different genetic backgrounds and taxonomic status of G. gracilis by comparing the DNA polymorphism patterns of four high-diversity single-copy nuclear genes. A total of 152, 22, and 77 accessions of G. soja, G. gracilis, and G. max were observed. The results indicated that G. max retained only 75.3 (π) and 39% (θ) of the nucleotide polymorphism found in G. soja. Four gene loci evolved according to neutrality in both G. max and G. gracilis populations, and three gene loci evolved according to neutrality in G. soja pop

SUBMITTER: Wang Y 

PROVIDER: S-EPMC4588648 | biostudies-literature | 2015 Sep

REPOSITORIES: biostudies-literature