Yield performances of japonica introgression lines selected for drought tolerance in a BC breeding programme

doi:10.1111/j.1439-0523.2009.01683.x

CORC > 中国农业科学院 > 作物科学研究所

	Yield performances of japonica introgression lines selected for drought tolerance in a BC breeding programme
	He, Y. X.1,2,3; Zheng, T. Q.1; Hao, X. B.4; Wang, L. F.1; Gao, Y. M.1; Hua, Z. T.4; Zhai, H. Q.1; Xu, J. L.1; Xu, Z. J.2; Zhu, L. H.1
刊名	PLANT BREEDING
	2010
卷号	129 期号:2 页码:167-175
关键词	Oryza sativa L yield potential drought tolerance introgression line hidden diversity
ISSN号	0179-9541
DOI	10.1111/j.1439-0523.2009.01683.x
通讯作者	He, Y. X.
英文摘要	P>Developing drought tolerant cultivars is a preferred strategy to solve water-shortage facing rice farmers. A backcross (BC) breeding was initiated to improve drought tolerance (DT) of japonica hybrids in North China using an elite japonica restorer, C418, as recipient and five indica cultivars as donors. A two-round-selection for yield under severe drought together with a two-round-selection for yield under irrigation resulted in 113 BC(2)F(8) introgression lines (ILs). Progeny testing allowed the identification of 46 (40.7%) superior-C418-ILs that had significantly improved yield potential under water stress and/or normal irrigation, demonstrating the power of BC breeding in exploiting favourable variation hidden in the indica gene pool for improving complex traits of japonica rice. Increased height and accelerated-heading were major phenotypic changes correlated with improved-yield under stress in these ILs, suggesting the possible involvement of gibberellin (GA) pathway and drought escaping. Considerable variations in yield components among these ILs indicate the presence of different underlying mechanisms. The C418-ILs developed in this study provide useful materials for dissecting DT and yield, and for further target-trait-improvement by pyramiding.
学科主题	Agronomy ; Biotechnology & Applied Microbiology ; Plant Sciences ; AGRONOMY ; BIOTECHNOLOGY & APPLIED MICROBIOLOGY ; PLANT SCIENCES
语种	英语
出版者	WILEY-BLACKWELL PUBLISHING, INC
WOS记录号	WOS:000276617900007
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/5431]
专题	作物科学研究所
作者单位	1.Chinese Acad Agr Sci, Inst Crop Sci, Natl Key Facil Crop Gene Resources & Genet Improv, Beijing 100081, Peoples R China 2.Shenyang Agr Univ, Shenyang 100161, Peoples R China 3.Heilongjiang Acad Agr Sci, Harbin 150086, Peoples R China 4.Liaoning Acad Agr Sci, Shenyang 100161, Peoples R China 5.Int Rice Res Inst, Manila, Philippines
推荐引用方式 GB/T 7714	He, Y. X.,Zheng, T. Q.,Hao, X. B.,et al. Yield performances of japonica introgression lines selected for drought tolerance in a BC breeding programme[J]. PLANT BREEDING,2010,129(2):167-175.
APA	He, Y. X..,Zheng, T. Q..,Hao, X. B..,Wang, L. F..,Gao, Y. M..,...&Li, Z. K..(2010).Yield performances of japonica introgression lines selected for drought tolerance in a BC breeding programme.PLANT BREEDING,129(2),167-175.
MLA	He, Y. X.,et al."Yield performances of japonica introgression lines selected for drought tolerance in a BC breeding programme".PLANT BREEDING 129.2(2010):167-175.