Association mapping of soybean seed germination under salt stress.

摘要: Soil salinity is a serious threat to agriculture sustainability worldwide. Seed germination critical phase that ensures the successful establishment and productivity of soybeans in saline soils. However, little information available regarding soybean salt tolerance at stage. The objective this study was identify genetic mechanisms seed under stress. One natural population consisting 191 landraces used study. Soybean seeds produced four environments were evaluate their Using 1142 single-nucleotide polymorphisms (SNPs), molecular markers associated with detected by genome-wide association analysis. Eight SNP-trait associations 13 suggestive identified using mixed linear model TASSEL 4.0 software. SNPs or co-associated two indices, namely (1) ratio index conditions no-salt (ST-GI) (2) rate (ST-GR). SNP (BARC-021347-04042) significantly these traits (ST-GI ST-GR). In addition, nine possible candidate genes located near region where above mapped. Of these, five genes, Glyma08g12400.1, Glyma08g09730.1, Glyma18g47140.1, Glyma09g00460.1, Glyma09g00490.3, verified response stress could facilitate better understanding basis stage, marker BARC-021347-04042 contribute future breeding for marker-assisted selection.