Li Yuyao, Tang Jingquan, Liu Wenlin, Yan Wenyi, Sun Yan, Che Jingyu, Tian Chao, Zhang Hongji, Yu Lihe
Heilongjiang Bayi Agricultural University, Daqing, China.
Heilongjiang Academy of Agricultural Sciences, Harbin, China.
Front Genet. 2021 Nov 15;12:728472. doi: 10.3389/fgene.2021.728472. eCollection 2021.
Uncovering the genetic architecture for grain yield (GY)-related traits is important for wheat breeding. To detect stable loci for GY-related traits, a genome-wide association study (GWAS) was conducted in a diverse panel, which included 251 elite spring wheat accessions mainly from the Northeast of China. In total, 52,503 single nucleotide polymorphisms (SNPs) from the wheat 55 K SNP arrays were used. Thirty-eight loci for GY-related traits were detected and each explained 6.5-16.7% of the phenotypic variations among which 12 are at similar locations with the known genes or quantitative trait loci and 26 are likely to be new. Furthermore, six genes possibly involved in cell division, signal transduction, and plant development are candidate genes for GY-related traits. This study provides new insights into the genetic architecture of GY and the significantly associated SNPs and accessions with a larger number of favorable alleles could be used to further enhance GY in breeding.
揭示与籽粒产量（GY）相关性状的遗传结构对小麦育种很重要。为了检测与GY相关性状的稳定位点，在一个多样化的群体中进行了全基因组关联研究（GWAS），该群体包括251份主要来自中国东北地区的优良春小麦种质。总共使用了来自小麦55K SNP芯片的52,503个单核苷酸多态性（SNP）。检测到38个与GY相关性状的位点，每个位点解释了6.5-16.7%的表型变异，其中12个位于与已知基因或数量性状位点相似的位置，26个可能是新的。此外，六个可能参与细胞分裂、信号转导和植物发育的基因是与GY相关性状的候选基因。本研究为GY的遗传结构提供了新的见解，具有大量有利等位基因的显著相关SNP和种质可用于在育种中进一步提高GY。
