Selection Of Soybean Elite Cultivars B.ased On Phenotypic And G enomic Characters Related To Lodging Tolerance
文献类型: 外文期刊
作者: Liu, ZX; Li, HH; Fan, XH; Huang, W; Yang, JY; Zheng, YH; Wen, ZX; Li, YH; Wang, DC; Wang, SM; Qiu, LJ
作者机构:
关键词: additive main effects and multiplicative interaction model; genome-wide association analysis; lodging scores; lodging tolerance; soybean
期刊名称: PLANT BREEDING
ISSN: 0179-9541
年卷期: 2017 年 136 卷 4 期
页码:
收录情况: JCR(2021版)
摘要: Soybean lodging can result in serious yield reduction. Detecting the quantitative trait loci (QTL) associated with lodging tolerance for their further application in marker-assisted selection (MAS) has the potential to enhance soybean breeding efficiency. In this study, a genome-wide association analysis (GWAS) was performed to identify soybean accessions that could potentially be used to produce lodging-tolerant varieties, based on the comprehensive evaluation of lodging scores (LS) obtained for the parental cultivar Tokachi nagaha and its 137 derived cultivars. Results showed that genotype, environment and genotypexenvironment interaction significantly influenced LS. Of the 31 significant SNPs identified, 22 were consistently detected in two or more environments and 27 SNPs were located in or close to agronomically important QTL mapped by linkage analysis. Best linear unbiased predictors (BLUPs) of LS tend to decrease with the elite alleles contained by accessions increasing. Some excellent accessions, with lower BLUPs and D-i (stability coefficients) values and more elite alleles, were selected. This study contributed to understand the genetic mechanism of lodging, providing genetic and phenotypic information for MAS.
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