Genetic diversity and population structure of wild soybean (Glycine sojaSieb. and Zucc.) accessions in Korea

Abstract

Genetic variation in wild soybean (Glycine soja Sieb. and Zucc.) is a valuable resource for crop improvement efforts. Soybean is believed to have originated from China, Korea, and Japan, but little is known about the diversity or evolution of Korean wild soybean. Therefore, in this study, we evaluated the genetic diversity and population structure of 733 G. soja accessions collected in Korea using 21 simple sequence repeat (SSR) markers. The SSR loci produced 539 alleles (25.7 per locus) with a mean genetic diversity of 0.882 in these accessions. Rare alleles, those with a frequency of less than 5%, represented 75% of the total number. This collection was divided into two populations based on the principal coordinate analysis. Accessions from population 1 were distributed throughout the country, whereas most of the accessions from population 2 were distributed on the western side of the Taebaek and Sobaek mountains. The Korean G. soja collection evaluated in this study should provide useful background information for allele mining approach and breeding programmes to introgress alleles into the cultivated soybean (G. max (L). Merr.) from wild soybean.

Environmental versus geographical effects on genomic variation in wild soybean (Glycine soja) across its native range in northeast Asia

“…Given that G. soja primarily is a selfing species (F IS = 0.93) (Guo et al 2012), a reasonable expectation was that our sampled populations would be clearly structured. Some previous studies have suggested genetic clustering in this species (Wen et al 2009;Li et al 2010;Kim et al 2014), but admixture also has been found (Li et al 2010;Guo et al 2012). It therefore was of interest to discover the extent of admixture among our sampled wild soybean ecotypes and how it might be understood in terms of the evolutionary history of this species.…”

“…; Kim et al. ). Here, we sample wild soybeans across northeast Asia and analyze over 39,000 single nucleotide polymorphisms (SNPs) in each ecotype.…”

“…However, most of these studies have focused on the domestication process and/or on traits of agricultural interest, typically with few samples of wild soybeans (Lam et al 2010;Guo et al 2012;Li et al 2014;Zhou et al 2015). Various other studies have sampled wild soybeans in restricted regions such as Japan or Korea, and have made use of a relatively small number of molecular markers (Kuroda et al 2006;Kim et al 2014). Here, we sample wild soybeans across northeast Asia and analyze over 39,000 single nucleotide polymorphisms (SNPs) in each ecotype.…”

Optimization of a Virus-Induced Gene Silencing System with Soybean yellow common mosaic virus for Gene Function Studies in Soybeans

“…Eight cultivated (Alchangkong, Danbaegkong, Jangmikong, Jangsukong, Jangyeobkong, SS2-2, Taekwangkong, and Williams 82) and eight wild (GWS 0030, GWS 0210, GWS 0368, GWS 0972, GWS 0999, GWS 1009, GWS 1237, and IT 182932) soybean germplasms ( Kim et al, 2014 ) were used in this study. Soybean germplasm were germinated and grown in Wagner pots containing a steam-sterilized soil mixture.…”

Analysis of population structure and genetic diversity in a Southern African soybean collection based on single nucleotide polymorphism markers

“…According to the literature and actual pedigree analysis of this germplasm set, most soybean lines were developed from a narrow genetic base derived from a few ancestral lines. A survey of the literature indicates extensive utilization of external germplasm from different countries, such as China, Japan and Korea (Abebe et al 2021;Bruce et al 2019;Jeong et al 2019a, b;Kim et al 2014). It is a standard and recommended industry practice for breeders to continuously incorporate and integrate external germplasm in their breeding programs.…”