|Table of Contents|

Association Mapping of Wild Soybean (Glycine soja) Seed Germination Under Salt Stress(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2017年05期
Page:
733-736
Research Field:
Publishing date:

Info

Title:
Association Mapping of Wild Soybean (Glycine soja) Seed Germination Under Salt Stress
Author(s):
KAN Gui-zhen;  ZHANG Wei;  LI Ya-kai;  YU De-yue
(Soybean Research Institute, Nanjing Agricultural University/National Center for Soybean Improvement/National Key Laboratory for Crop Genetics and Germplasm Enhancement, Nanjing 210095, China)
Keywords:
Wild soybean;  Germination;  Salt tolerance;  Genome-wide association mapping
PACS:
-
DOI:
10.11861/j.issn.1000-9841.2017.05.0737
Abstract:
Salinity is one of major abiotic stress factors threatening soybean production. The previous studies mainly focused on salt tolerance at the soybean seedling stage. A few studies regarding salt tolerance during germination have been reported. Wild soybeans with richness of resistance genes are valuable resources for soybean genetic improvement. The objective of this study was to identify the genetic mechanisms of wild soybean seed germination under salt stress. One natural population consisting of 113 wild soybean accessions was used in this study. Three salt tolerance indices were measured. The molecular markers associated with salt tolerance were detected in 2013, 2014 and across two years by combining SSRs of genome-wide association analysis-26 SSR-trait associations were identified using a mixed linear model and the TASSEL 2-1 software. Six SSRs, Satt521, Satt022, Satt239, Satt516, Satt251 and Satt285, were identified in two or three environments. Four SSRs, Satt516, Satt251, Satt285 and GMES4990, were co-associated with two or three salt tolerance indices. Furthermore, elite alleles and their carrier materials were identified by analyzing alleles at the above loci. These results could contribute to elucidate the genetic mechanisms of salt tolerance, explore new salt tolerant genes, and provide important foundation for broadening soybean’s genetic base, molecular marker assisted selection and molecular design breeding in soybean salt tolerance breeding.

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Last Update: 2017-10-31