Identification and validation of the superior alleles for wheat kernel traits detected by genome-wide association study under different nitrogen environments
文献类型： 外文期刊
作者： Zhang, Na 1 ; Zhang, Xilan 1 ; Song, Liqiang 1 ; Su, Qiannan 1 ; Zhang, Shuai 1 ; Liu, Jiajia 1 ; Zhang, Wei 5 ; Fu, Xiao 1 ;
作者机构： 1.Chinese Acad Sci, Ctr Agr Resources Res, Inst Genet & Dev Biol, Shijiazhuang 050022, Hebei, Peoples R China
2.Chinese Acad Sci, Innovat Acad Seed Design, Beijing 100101, Peoples R China
3.Chinese Acad Sci, State Key Lab Plant Cell & Chromosome Engn, Beijing 100101, Peoples R China
4.Univ Chinese Acad Sci, Beijing 10049, Peoples R China
5.Hebei Univ Econ & Business, Shijiazhuang 50061, Hebei, Peoples R China
6.Shijiazhuang Acad Agr & Forestry Sci, Shijiazhuang 050041, Hebei, Peoples R China
7.Hebei Acad Agr & Forestry Sci, Inst Dry Farming Agr, Hengshui 053000, Peoples R China
8.Hebei Acad Agr & Forestry Sci, Inst Cereal & Oil Crops, Hebei Lab Crop Genet & Breeding, Shijiazhuang 500350, Hebei, Peoples R China
关键词： Triticum aestivum; GWAS; Kernel trait; Nitrogen; KASP markers
期刊名称：EUPHYTICA （ 影响因子：1.895； 五年影响因子：2.181 ）
ISSN： 0014-2336
年卷期： 2020 年 216 卷 3 期
页码：
收录情况： SCI
摘要： Increasing kernel weight is a major driven force for high yield breeding. Dissecting the genetic basis of kernel traits and their response to nitrogen are essential for improving wheat yield and nitrogen use efficiency (NUE). In this study, genome-wide association studies were carried out based on Wheat55K SNP array genotyping data of 132 common wheat accessions. And phenotype values of four kernel traits were acquired from eight environments across both high nitrogen (HN) and low nitrogen (LN) environments. Twenty-four significant marker-trait associations grouped into 20 loci for thousand kernel weight (TKW), kernel length (KL), kernel width (KW) and kernel diameter ratio (KDR) were repetitively detected in three or more environments. Of these, AX-111690659-7B was a novel locus for KL, and four loci AX-110556510-1D, AX-109775854-2D, AX-109303193-3B and AX-110468887-4A were validated in two recombinant inbred line populations and/or the Chinese wheat mini core collection. Ten loci for KL, KW and KDR were stably identified in HN and LN environments. The six KASP markers related to TKW, KL and KW would benefit the kernel weight, yield potential and NUE improvement in wheat breeding. Evaluation of the additive effects, distribution and frequency of the superior alleles that were significantly associated with kernel traits suggested that the loci for KW are with the most promising in elevating kernel weight.
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