Genetic Diversity of Wild Soybeans from Some Regions of Southern China Based on SSR and SRAP Markers

There are rich annual wild soybean (Glycine soja) resources in Southern China, which are the progenitor of cultivated soybean. To evaluate the genetic diversity and differentiation of G. soja in Southern China, the authors analyzed allelic profiles of 141 annual wild soybean accessions from Southern China and 8 core wild soybean accessions from Northern China by using 41 simple sequence repeat (SSR) markers and 18 Sequence-related amplified polymorphism (SRAP) primer combinations. The 41 SSR markers produced a total of 421 alleles (10.27 per locus) with a mean of gene diversity of 0.825 (Simpson index) and 1.987 (Shannon-weaver index). The above results indicated that Fujian province could be the major center of genetic diversity for annual wild soybean in Southern China. In addition, Mantle test showed there was a weak positive linear correlation (r = 0.25) between SSR and SRAP analysis in the study.