Genome-wide association study of yield-related traits in common wheat (Triticum aestivum L.) under normal and drought treatment conditions
文献类型: 外文期刊
第一作者: Zhao, Jie
作者: Zhao, Jie;Sun, Lijing;Hu, Mengyun;Zhao, Yun;Li, Qianying;Wang, Peinan;Li, Hui;Zhang, Yingjun;Gao, Huimin;Mu, Liming;Cheng, Xiaohu;Wang, Jianbing
作者机构:
关键词: common wheat; yield; GWAS; drought; KASP markers
期刊名称:FRONTIERS IN PLANT SCIENCE ( 影响因子:5.6; 五年影响因子:6.8 )
ISSN: 1664-462X
年卷期: 2023 年 13 卷
页码:
收录情况: SCI
摘要: The primary goal of modern wheat breeding is to develop new high-yielding and widely adaptable varieties. We analyzed four yield-related agronomic traits in 502 wheat accessions under normal conditions (NC) and drought treatment (DT) conditions over three years. The genome-wide association analysis identified 51 yield-related and nine drought-resistance-related QTL, including 13 for the thousand-grain weight (TGW), 30 for grain length (GL), three for grain width (GW), five for spike length (SL) and nine for stress tolerance index (STI) QTL in wheat. These QTL, containing 72 single nucleotide polymorphisms (SNPs), explained 2.23 - 7.35% of the phenotypic variation across multiple environments. Eight stable SNPs on chromosomes 2A, 2D, 3B, 4A, 5B, 5D, and 7D were associated with phenotypic stability under NC and DT conditions. Two of these stable SNPs had association with TGW and STI. Several novel QTL for TGW, GL and SL were identified on different chromosomes. Three linked SNPs were transformed into kompetitive allele-specific PCR (KASP) markers. These results will facilitate the discovery of promising SNPs for yield-related traits and/or drought stress tolerance and will accelerate the development of new wheat varieties with desirable alleles.
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