Genome-wide dissection of heterosis for yield traits in two-line hybrid   rice populations

doi:10.1038/s41598-017-06742-7

CORC > 北京大学 > 生命科学学院

	Genome-wide dissection of heterosis for yield traits in two-line hybrid rice populations
	Zhen, Gang ; Qin, Peng ; Liu, Kai Yu ; Nie, Dong Yang ; Yang, Yuan Zhu ; Deng, Xing Wang ; He, Hang
刊名	SCIENTIFIC REPORTS
	2017
关键词	ASSOCIATION MAPPING POPULATION HETEROGENEOUS STOCK MICE GENE BALANCE HYPOTHESIS COMPLEX TRAITS CROP PLANTS DOMINANCE MAIZE GRAIN WHOLE ARCHITECTURE
DOI	10.1038/s41598-017-06742-7
英文摘要	Heterosis has been widely utilized in agriculture and is important for world food safety. Many genetic models have been proposed as mechanisms underlying heterosis during the past century, yet more evidence is needed to support such models. To investigate heterosis in two-line hybrid rice, we generated a partial diallel crossing scheme, which consisted of approximately 500 F1 hybrids derived from 14 male sterile lines and 39 restorer lines. In this population, increased panicle number played the most important role in yield heterosis of hybrid rice. Genome-wide association studies identified many QTLs related to the yield traits of F1 hybrids, better paternal heterosis and special combining ability. Relevant genes, including Hd3a, qGL3, OsmiR156h, and LAX2, were identified as candidates within these QTLs. Nearly forty percent of the QTLs had only two genotypes in the F1 hybrids, mainly because the maternal lines were under intense selective pressure. Further analysis found male sterile lines and restorer lines made different superior allele contributions to F1 hybrids, and their contributions varied among different traits. These results extend our understanding of the molecular basis of heterosis in two-line hybrid rice.; National Program on Key Basic Research Project of China (973 Program) [2013CBA01402]; National High Technology Research and Development Program of China (863 Program) [2012AA10A304, 2014AA10A602]; National Natural Science Foundation of China [U1031001, 31201277]; SCI(E); ARTICLE; 7
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/471548]
专题	生命科学学院
推荐引用方式 GB/T 7714	Zhen, Gang,Qin, Peng,Liu, Kai Yu,et al. Genome-wide dissection of heterosis for yield traits in two-line hybrid rice populations[J]. SCIENTIFIC REPORTS,2017.
APA	Zhen, Gang.,Qin, Peng.,Liu, Kai Yu.,Nie, Dong Yang.,Yang, Yuan Zhu.,...&He, Hang.(2017).Genome-wide dissection of heterosis for yield traits in two-line hybrid rice populations.SCIENTIFIC REPORTS.
MLA	Zhen, Gang,et al."Genome-wide dissection of heterosis for yield traits in two-line hybrid rice populations".SCIENTIFIC REPORTS (2017).