Mapping QTL controlling maize deep-seeding tolerance-related traits and confirmation of a major QTL for mesocotyl length

doi:10.1007/s00122-011-1700-y

	Mapping QTL controlling maize deep-seeding tolerance-related traits and confirmation of a major QTL for mesocotyl length
	Zhang, Hongwei 2,3; Ma, Pan 2,3; Zhao, Zhengnan 2,3; Zhao, Guangwu 2,3; Tian, Baohua 2,3; Wang, Jianhua 2,3; Wang, Guoying 1
刊名	THEORETICAL AND APPLIED GENETICS
	2012
卷号	124 期号:1 页码:223-232
ISSN号	0040-5752
DOI	10.1007/s00122-011-1700-y
通讯作者	Zhang, Hongwei
英文摘要	Deep-seeding tolerant seeds can emerge from deep soil where the moisture is suitable for seed germination. Breeding deep-seeding tolerant cultivars is becoming increasingly important in arid and semi-arid regions. To dissect the quantitative trait loci (QTL) controlling deep-seeding tolerance traits, we selected a tolerant maize inbred line 3681-4 and crossed it with the elite inbred line-X178 to generate an F-2 population and the derivative F-2:3 families. A molecular linkage map composed of 179 molecular markers was constructed, and 25 QTL were detected including 10 QTL for sowing at 10 cm depth and 15 QTL for sowing at 20 cm depth. The QTL analysis results confirmed that deep-seeding tolerance was mainly caused by mesocotyl elongation and also revealed considerable overlap among QTL for different traits. To confirm a major QTL on chromosome 10 for mesocotyl length measured at 20 cm depth, we selected and self-pollinated a BC3F2 plant that was heterozygous at the markers around the target QTL and homozygous at other QTL to generate a BC3F3 population. We found that this QTL explained more phenotypic variance in the BC3F3 population than that in the F-2 population, which laid the foundation for fine mapping and NIL (near-isogenic line) construction.
学科主题	Agronomy ; Plant Sciences ; Genetics & Heredity ; Horticulture ; AGRONOMY ; GENETICS & HEREDITY ; HORTICULTURE ; PLANT SCIENCES
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000299539300018
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/5228]
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, Beijing 100081, Peoples R China 2.China Agr Univ, State Key Lab Agrobiotechnol, Beijing 100193, Peoples R China 3.China Agr Univ, Natl Ctr Plant Gene Res Beijing, Beijing 100193, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Hongwei,Ma, Pan,Zhao, Zhengnan,et al. Mapping QTL controlling maize deep-seeding tolerance-related traits and confirmation of a major QTL for mesocotyl length[J]. THEORETICAL AND APPLIED GENETICS,2012,124(1):223-232.
APA	Zhang, Hongwei.,Ma, Pan.,Zhao, Zhengnan.,Zhao, Guangwu.,Tian, Baohua.,...&Wang, Guoying.(2012).Mapping QTL controlling maize deep-seeding tolerance-related traits and confirmation of a major QTL for mesocotyl length.THEORETICAL AND APPLIED GENETICS,124(1),223-232.
MLA	Zhang, Hongwei,et al."Mapping QTL controlling maize deep-seeding tolerance-related traits and confirmation of a major QTL for mesocotyl length".THEORETICAL AND APPLIED GENETICS 124.1(2012):223-232.