Drought-tolerance QTLs commonly detected in two sets of reciprocal introgression lines in rice

doi:10.1071/CP13344

	Drought-tolerance QTLs commonly detected in two sets of reciprocal introgression lines in rice
	Wang, Yun 1,2; Zhang, Qiang 1,2; Zheng, Tianqing 1; Cui, Yanru 1; Zhang, Wenzhong 2; Xu, Jianlong 1; Li, Zhikang 1
刊名	CROP & PASTURE SCIENCE
	2014
卷号	65 期号:2 页码:171-184
关键词	Abiotic stress tolerance, marker-assisted selection, pyramiding, genetic background effect, rice.
ISSN号	1836-0947
DOI	10.1071/CP13344
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 (QTLs) for drought tolerance (DT) at the reproductive stage were identified with two sets of reciprocal introgression lines derived from Lemont x Teqing. In total, 29 and 23 QTLs were identified in the Teqing and Lemont backgrounds, respectively, during the reproductive stage under drought and irrigated conditions for spikelet number per panicle, seed fertility, filled grain weight per panicle, plant height, and grain yield per plant. Most of these QTLs showed obvious differential expressions in response to drought stress. Another 21 QTLs were detected by the ratio of trait values under drought stress relative to the normal irrigation conditions in the two backgrounds. For 28 DT QTLs, the Teqing alleles at 23 loci had increased trait values and could improve DT under drought stress. Only five (17.9%) DT QTLs (QSnp1b, QSnp3a, QSnp11, QSf8, and QGyp2a) were consistently detected in the two backgrounds, clearly suggesting overwhelming genetic background effects on QTL detection for DT. Seven of the DT QTL regions identified were found to share the same genomic regions with previously reported DT-related genes. Introgressing or pyramiding of favourable alleles from Teqing at the validated QTLs (QSnp3a, QSnp11 and QGyp2a) into Lemont background may improve DT level of Lemont.
学科主题	Agriculture, Multidisciplinary ; AGRICULTURE, MULTIDISCIPLINARY
语种	英语
出版者	CSIRO PUBLISHING
WOS记录号	WOS:000331723000005
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/4949]
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 Japonica Rice Genet & Breeding, Shenyang 110866, Peoples R China
推荐引用方式 GB/T 7714	Wang, Yun,Zhang, Qiang,Zheng, Tianqing,et al. Drought-tolerance QTLs commonly detected in two sets of reciprocal introgression lines in rice[J]. CROP & PASTURE SCIENCE,2014,65(2):171-184.
APA	Wang, Yun.,Zhang, Qiang.,Zheng, Tianqing.,Cui, Yanru.,Zhang, Wenzhong.,...&Li, Zhikang.(2014).Drought-tolerance QTLs commonly detected in two sets of reciprocal introgression lines in rice.CROP & PASTURE SCIENCE,65(2),171-184.
MLA	Wang, Yun,et al."Drought-tolerance QTLs commonly detected in two sets of reciprocal introgression lines in rice".CROP & PASTURE SCIENCE 65.2(2014):171-184.