Identification of quantitative trait loci for drought tolerance at seedling stage by screening a large number of introgression lines in maize

doi:10.1111/j.1439-0523.2009.01642.x

CORC > 中国农业科学院 > 作物科学研究所

	Identification of quantitative trait loci for drought tolerance at seedling stage by screening a large number of introgression lines in maize
	Hao, Z.1,2; Liu, X.1; Li, X.1; Xie, C.1; Li, M.1; Zhang, D.1; Zhang, S.1; Xu, Y.2
刊名	PLANT BREEDING
	2009
卷号	128 期号:4 页码:337-341
关键词	Maize (Zea mays) drought tolerance quantitative trait loci (QTL) seedling stage introgression line (IL)
ISSN号	0179-9541
DOI	10.1111/j.1439-0523.2009.01642.x
通讯作者	Hao, Z.
英文摘要	The maize genome hosts tremendous phenotypic and molecular diversity. Introgression lines (ILs), developed by continuous backcrossing to recurrent parents, could provide a unique genetic stock for quantitative trait locus (QTL) mapping. Using maize lines from six heterotic groups of different ecological zones, we developed > 500 BC(2)F(2) IL sets by crossing 11 inbred lines (as recurrent parents) with > 200 local maize inbred lines (as donor parents). Of them, 34 IL sets were selected as a subset for drought tolerance screening and a total of 417 ILs survived under severe water stress at seedling stage. One set of 32 surviving ILs, derived from Chang7-2/DHuang212, was used for QTL mapping with simple sequence repeat markers covering the whole genome, with seven QTL detected. Furthermore, investigating all surviving ILs, we identified two common regions in bin 3.04, corresponding to marker intervals bnlg1904-umc1772 and umc1223-bnlg1957, respectively, which shared high genetic variation in three IL sets. Our results indicated that selective genotyping can be used to identify genetic loci for complex traits. The ILs, highly selected for drought tolerance in this study, provide a unique set of materials for both genomic studies and development of enhanced germplasm resources.
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:000268659400003
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/5506]
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 Genet Resources & Improvement, Beijing 100081, Peoples R China 2.CIMMYT, Genet Resources Program, Int Maize & Wheat Improvement Ctr, El Batan, Texoco, Mexico
推荐引用方式 GB/T 7714	Hao, Z.,Liu, X.,Li, X.,et al. Identification of quantitative trait loci for drought tolerance at seedling stage by screening a large number of introgression lines in maize[J]. PLANT BREEDING,2009,128(4):337-341.
APA	Hao, Z..,Liu, X..,Li, X..,Xie, C..,Li, M..,...&Xu, Y..(2009).Identification of quantitative trait loci for drought tolerance at seedling stage by screening a large number of introgression lines in maize.PLANT BREEDING,128(4),337-341.
MLA	Hao, Z.,et al."Identification of quantitative trait loci for drought tolerance at seedling stage by screening a large number of introgression lines in maize".PLANT BREEDING 128.4(2009):337-341.