Genome-wide Association Analysis of Kernel Morphology in Breeding Lines Derived from Synthetic Hexaploid Wheat in Qinghai Province, China

NWIPB OpenIR

	Genome-wide Association Analysis of Kernel Morphology in Breeding Lines Derived from Synthetic Hexaploid Wheat in Qinghai Province, China
	Wang, H.; Cao, D.; Chen, W.; Liu, D.; Liu, B.; Zhang, H.
	2018
发表期刊	CEREAL RESEARCH COMMUNICATIONS
卷号	46 期号:3
摘要	Wheat kernel morphology is a very important trait for wheat yield improvement. This is the first report of association analysis of kernel morphology traits in wheat breeding lines. In Qinghai, China, the research described here involved genome-wide association analysis in breeding lines derived from synthetic hexaploid wheat with a mixed linear model to identify the quantitative trait loci (QTLs) related to kernel morphology. The 8033 effective Diversity Array Technology (DArT) markers produced a genetic map of 5901.84 cM with an average density of 1.36 markers/cM. Population structure analysis classified 507 breeding lines into three groups by Bayesian structure analysis using unlinked markers. Linkage disequilibrium decay was observed with a map coverage of 2.78 cM. Marker-trait association analysis showed that 15 DArT markers for kernel morphology were detected, located on nine chromosomes, and explained 2.6%-4.0% of the phenotypic variation of kernel area (KA), kernel width (KW), kernel length (KL) and thousand-kernel weight (TKW). The marker 1139297 was related to both the KL and KA traits. Only six DArT markers were close to known QTLs. The parent SHW-L1 carried eight favored alleles, while other seven favored alleles were derived from elite common wheat cultivars. These QTLs, identified in elite breeding lines, should help us understand the kernel morphology trait better, and to provide germ-plasm for breeding new wheat cultivars for Qinghai Province or other regions.
关键词	Genome-wide association kernel morphology Synthetic hexaploid wheat
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/59978
专题	中国科学院西北高原生物研究所
推荐引用方式 GB/T 7714	Wang, H.,Cao, D.,Chen, W.,et al. Genome-wide Association Analysis of Kernel Morphology in Breeding Lines Derived from Synthetic Hexaploid Wheat in Qinghai Province, China[J]. CEREAL RESEARCH COMMUNICATIONS,2018,46(3).
APA	Wang, H.,Cao, D.,Chen, W.,Liu, D.,Liu, B.,&Zhang, H..(2018).Genome-wide Association Analysis of Kernel Morphology in Breeding Lines Derived from Synthetic Hexaploid Wheat in Qinghai Province, China.CEREAL RESEARCH COMMUNICATIONS,46(3).
MLA	Wang, H.,et al."Genome-wide Association Analysis of Kernel Morphology in Breeding Lines Derived from Synthetic Hexaploid Wheat in Qinghai Province, China".CEREAL RESEARCH COMMUNICATIONS 46.3(2018).