Background-Independent Quantitative Trait Loci for Drought Tolerance Identified Using Advanced Backcross Introgression Lines in Rice

doi:10.2135/cropsci2012.06.0361

	Background-Independent Quantitative Trait Loci for Drought Tolerance Identified Using Advanced Backcross Introgression Lines in Rice
	Wang, Yun 1,2; Zang, Jinping 1; Sun, Yong 1; Ali, Jahuar 3; Xu, Jianlong 1; Li, Zhikang 1
刊名	CROP SCIENCE
	2013
卷号	53 期号:2 页码:430-441
ISSN号	0011-183X
DOI	10.2135/cropsci2012.06.0361
通讯作者	Wang, Yun
英文摘要	Drought is one of the major abiotic stresses limiting rice (Oryza sativa L.) production. Quantitative trait loci (QTL) for drought tolerance (DT) at the reproductive stage were identified with two sets of advanced backcross introgression lines (ILs) using a common donor Tarom Molaei introgressed separately into two recipients used as female parents, Teqing and IR64. A total of 24 and 22 QTL were identified in the IR64 and Teqing backgrounds, respectively, during the reproductive stage under drought and irrigated conditions for thousand-grain weight, panicle number per plant, filled grains per panicle, seed fertility, and grain yield per plant. Most of these QTL showed obvious differential expression in response to drought stress. In addition, another 12 QTL were detected by the ratio of trait values under drought stress relative to the normal irrigation condition in the two backgrounds. The Tarom Molaei alleles at 8 of 12 loci with increased trait values could improve tolerance under drought stress. Only three (18.8%) DT QTL (QTgw7, QSf7, and QFgp11) were in common in the two backgrounds, clearly suggesting overwhelming genetic background effects on QTL detection for DT. Eight of the DT QTL identified were found to share the same genomic regions with previously reported DT-related genes. Introgressing and pyramiding of favorable alleles from Tarom Molaei into Teqing and IR64 backgrounds may facilitate development of superior ILs with greater DT levels.
学科主题	Agronomy ; AGRONOMY
语种	英语
出版者	CROP SCIENCE SOC AMER
WOS记录号	WOS:000315624600009
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/5060]
专题	作物科学研究所_分子生物学系
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, Minist Educ, Rice Res Inst, Key Lab Northern Japon Rice Genet & Breeding, Shenyang 110866, Peoples R China 3.Int Rice Res Inst, Manila, Philippines
推荐引用方式 GB/T 7714	Wang, Yun,Zang, Jinping,Sun, Yong,et al. Background-Independent Quantitative Trait Loci for Drought Tolerance Identified Using Advanced Backcross Introgression Lines in Rice[J]. CROP SCIENCE,2013,53(2):430-441.
APA	Wang, Yun,Zang, Jinping,Sun, Yong,Ali, Jahuar,Xu, Jianlong,&Li, Zhikang.(2013).Background-Independent Quantitative Trait Loci for Drought Tolerance Identified Using Advanced Backcross Introgression Lines in Rice.CROP SCIENCE,53(2),430-441.
MLA	Wang, Yun,et al."Background-Independent Quantitative Trait Loci for Drought Tolerance Identified Using Advanced Backcross Introgression Lines in Rice".CROP SCIENCE 53.2(2013):430-441.