Genome-Wide Association Mapping for Yield and Related Traits Under Drought Stressed and Non-stressed Environments in Wheat

被引:15
|
作者
Rabbi, S. M. Hisam A. [1 ]
Kumar, Ajay [1 ]
Naraghi, Sepehr Mohajeri [1 ]
Simsek, Senay [1 ]
Sapkota, Suraj [2 ]
Solanki, Shyam [3 ]
Alamri, Mohammed S. [4 ]
Elias, Elias M. [1 ]
Kianian, Shahryar [5 ]
Missaoui, Ali [2 ,6 ]
Mergoum, Mohamed [2 ,6 ]
机构
[1] North Dakota State Univ, Dept Plant Sci, Fargo, ND 58105 USA
[2] Univ Georgia, Inst Plant Breeding Genet & Genom, Griffin, GA 30223 USA
[3] Washington State Univ, Dept Crop & Soil Sci, Pullman, WA 99164 USA
[4] King Saud Univ, Dept Food Sci & Nutr, Riyadh, Saudi Arabia
[5] Univ Minnesota, USDA ARS, Cereal Dis Lab, St Paul, MN 55108 USA
[6] Univ Georgia, Dept Crop & Soil Sci, Griffin, GA 30223 USA
关键词
drought tolerance; hard red spring wheat; association mapping; quantitative trait loci; marker-assisted selection; SPRING WHEAT; AGRONOMIC TRAITS; QUALITY TRAITS; TOLERANCE; LOCI; QTL; COMPONENTS; POLYMORPHISM;
D O I
10.3389/fgene.2021.649988
中图分类号
Q3 [遗传学];
学科分类号
071007 ; 090102 ;
摘要
Understanding the genetics of drought tolerance in hard red spring wheat (HRSW) in northern USA is a prerequisite for developing drought-tolerant cultivars for this region. An association mapping (AM) study for drought tolerance in spring wheat in northern USA was undertaken using 361 wheat genotypes and Infinium 90K single-nucleotide polymorphism (SNP) assay. The genotypes were evaluated in nine different locations of North Dakota (ND) for plant height (PH), days to heading (DH), yield (YLD), test weight (TW), and thousand kernel weight (TKW) under rain-fed conditions. Rainfall data and soil type of the locations were used to assess drought conditions. A mixed linear model (MLM), which accounts for population structure and kinship (PC+K), was used for marker-trait association. A total of 69 consistent QTL involved with drought tolerance-related traits were identified, with p <= 0.001. Chromosomes 1A, 3A, 3B, 4B, 4D, 5B, 6A, and 6B were identified to harbor major QTL for drought tolerance. Six potential novel QTL were identified on chromosomes 3D, 4A, 5B, 7A, and 7B. The novel QTL were identified for DH, PH, and TKW. The findings of this study can be used in marker-assisted selection (MAS) for drought-tolerance breeding in spring wheat.
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页数:13
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