Construction of chromosomal segment substitution lines and genetic dissection of introgressed segments associated with yield determination in the parents of a super-hybrid rice

doi:10.1111/pbr.12329

CORC > 中国农业科学院 > 作物科学研究所

	Construction of chromosomal segment substitution lines and genetic dissection of introgressed segments associated with yield determination in the parents of a super-hybrid rice
	Liu, Xi 1; Zhao, Zhigang 1; Liu, Linglong 1; Xiao, Yinghui 1; Tian, Yunlu 1; Liu, Shi-Jia 1; Chen, Liangming 1; Wang, Yihua 1; Liu, Yuqiang 1; Chen, Saihua 1
刊名	PLANT BREEDING
	2016
卷号	135 期号:1 页码:63-72
关键词	Oryza sativa L chromosome segment substitution lines quantitative trait loci rice breeding yield-related traits
ISSN号	0179-9541
DOI	10.1111/pbr.12329
通讯作者	Liu, Xi
英文摘要	Heterosis is a phenomenon whereby hybrids of inbred lines produce favourable phenotypes that exceed those of their parents. Traits of interest are higher yield and stronger stress tolerance. The two-line super-hybrid rice Liangyoupei9' (LYP9) shows superiority to both its elite inbred line 93-11' and Pei'ai64s' (PA64s') parents and conventional hybrids. However, the genetic basis of its hybrid vigour, especially yield determination, remains elusive. In the present study, a set of 156 chromosome segment substitution lines (CSSLs) carrying overlapping segments from PA64s' in a genetic background of 93-11' were constructed and planted in six environments. Three major agronomic traits, viz. panicle length (PL), heading date (HD) and plant height (PH), and five yield-related traits, viz. grain weight per panicle (GWP), number of grains per panicle (GPP), 1000-grain weight (TGW), seed set (SS) and number of panicles of per plant (PPP), were evaluated over 3years. Quantitative trait loci (QTL) analysis was conducted using a likelihood ratio test based on stepwise regression. Forty-six putative QTL distributed on 11 chromosomes were detected in more than oneyear. Remarkably, GWP of four CSSLs carrying positive yield QTL outperformed the recurrent parent 93-11' by more than 15%, in at least two environments. These results indicate that CSSLs are effective in identifying yield-associated traits, and lines harbouring such QTL will be rich in resources for future molecular breeding programmes.
学科主题	Agronomy ; Biotechnology & Applied Microbiology ; Plant Sciences
语种	英语
出版者	WILEY-BLACKWELL
WOS记录号	WOS:000368810000009
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/4581]
专题	作物科学研究所
作者单位	1.Nanjing Agr Univ, Jiangsu Plant Gene Engn Res Ctr, State Key Lab Crop Genet & Germplasm Enhancement, Nanjing 210095, Peoples R China 2.Chinese Acad Agr Sci, Inst Crop Sci, Natl Key Facil Crop Gene Resources & Genet Improv, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Liu, Xi,Zhao, Zhigang,Liu, Linglong,et al. Construction of chromosomal segment substitution lines and genetic dissection of introgressed segments associated with yield determination in the parents of a super-hybrid rice[J]. PLANT BREEDING,2016,135(1):63-72.
APA	Liu, Xi.,Zhao, Zhigang.,Liu, Linglong.,Xiao, Yinghui.,Tian, Yunlu.,...&Wan, Jianmin.(2016).Construction of chromosomal segment substitution lines and genetic dissection of introgressed segments associated with yield determination in the parents of a super-hybrid rice.PLANT BREEDING,135(1),63-72.
MLA	Liu, Xi,et al."Construction of chromosomal segment substitution lines and genetic dissection of introgressed segments associated with yield determination in the parents of a super-hybrid rice".PLANT BREEDING 135.1(2016):63-72.