Liu Wenlin, Li Yuyao, Sun Yan, Tang Jingquan, Che Jingyu, Yang Shuping, Wang Xiangyu, Zhang Rui, Zhang Hongji
Crop Resources Institute, Heilongjiang Academy of Agricultural Sciences, Harbin, China.
Heilongjiang Academy of Agricultural Sciences, Harbin, China.
Front Genet. 2022 Aug 18;13:934757. doi: 10.3389/fgene.2022.934757. eCollection 2022.
Identification of the gene for agronomic traits is important for the wheat marker-assisted selection (MAS) breeding. To identify the new and stable loci for agronomic traits, including flag leaf length (FLL), flag leaf width (FLW), uppermost internode length (UIL), and plant morphology (PM, including prostrate, semi-prostrate, and erect). A total of 251 spring wheat accessions collected from the Northeast of China were used to conduct genome-wide association study (GWAS) by 55K SNP arrays. A total of 30 loci for morphological traits were detected, and each explained 4.8-17.9% of the phenotypic variations. Of these, 13 loci have been reported by previous studies, and the other 17 are novel. We have identified seven genes involved in the signal transduction, cell-cycle progression, and plant development pathway as candidate genes. This study provides new insights into the genetic basis of morphological traits. The associated SNPs and accessions with more of favorable alleles identified in this study could be used to promote the wheat breeding progresses.
鉴定农艺性状相关基因对小麦分子标记辅助选择（MAS）育种至关重要。为鉴定包括旗叶长度（FLL）、旗叶宽度（FLW）、最上部节间长度（UIL）和株型（PM，包括匍匐、半匍匐和直立）等农艺性状的新的稳定位点，利用55K SNP芯片对从中国东北地区收集的251份春小麦种质进行全基因组关联研究（GWAS）。共检测到30个形态性状位点，每个位点解释了4.8%-17.9%的表型变异。其中，13个位点先前已有研究报道，另外17个为新位点。我们已鉴定出7个参与信号转导、细胞周期进程和植物发育途径的基因作为候选基因。本研究为形态性状的遗传基础提供了新见解。本研究中鉴定出的具有更多有利等位基因的相关SNP和种质可用于推动小麦育种进程。
