QTL mapping for quantities of protein fractions in bread wheat (Triticum aestivum L.)

doi:10.1007/s00122-010-1503-6

	QTL mapping for quantities of protein fractions in bread wheat (Triticum aestivum L.)
	Zhang, Yong 3; Tang, Jianwei 3; Zhang, Yelun 3; Yan, Jun 2,3; Xiao, Yonggui 3; Zhang, Yan 3; Xia, Xianchun 3; He, Zhonghu 1,3
刊名	THEORETICAL AND APPLIED GENETICS
	2011
卷号	122 期号:5 页码:971-987
ISSN号	0040-5752
DOI	10.1007/s00122-010-1503-6
通讯作者	Zhang, Yong
英文摘要	One of the key targets of breeding programs in bread wheat is to improve the end-use quality. The relationships between quantities of protein fractions and dough rheological characters have been well established, but there is little information on the genetic control of quantities of protein fractions. Two hundred and forty F-6 recombinant inbred lines derived from a cross between two Chinese wheat cultivars, PH82-2 and Neixiang 188, were sown at Jiaozuo in Henan province in the 2005-2006 and 2006-2007 cropping seasons, and inclusive composite interval mapping was used to dissect main effect quantitative trait loci (M-QTLs) and digenic epistatic QTLs (E-QTLs) for quantities of protein fractions. A total of 55 M-QTLs and 77 pairs of E-QTLs affecting the quantities of protein fractions including GLU-A1 (QGA1), GLU-B1 (QGB1), GLU-D1 (QGD1), HMW-GS (QHMW), GLU-A3 (QGA3), GLU-B3 (QGB3), LMW-GS (QLMW), glutenin (QGLU) and the ratio of the quantity of glutenin to those of gliadin were identified, with M-QTLs contributing 39.3-95.6% of the phenotypic variance explained (PVE), and E-QTLs accounting for 1.4-33.5% of the PVE. Among the M-QTLs, 33 were consistent in two seasons and in the mean value of two seasons with similar effects in both magnitude and direction, including major genes on HMW and LMW glutenin loci linked to Sec1 and Glu-B1c, Glu-D1d, Glu-A3a, and grain hardness locus Ha, indicating that these genes were the most important determinants of gluten strength, and they might have significant effects on dough properties not only through effects on allelic composition, but also by influencing quantities of protein fractions. The effects of E-QTLs were more influenced by environments, compared with those of M-QTLs, with only two pairs of E-QTLs consistent in two seasons and in the mean value of two seasons. The M-QTLs were detected in 12 marker intervals, all of which involved E-QTLs on quantities of protein fractions, whereas only 40 of 77 pairs of E-QTLs involved intervals in which M-QTLs were detected. The results indicated that besides main effects, epistatic effects were also important factors in determining quantities of protein fractions in wheat.
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:000287591800012
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/5333]
专题	作物科学研究所_遗传育种系
作者单位	1.CAAS, CIMMYT China Off, Beijing 100081, Peoples R China 2.CAAS, Cotton Res Inst, Anyang 455000, Henan, Peoples R China 3.Chinese Acad Agr Sci, Inst Crop Sci, Natl Wheat Improvement Ctr, Natl Key Facil Crop Gene Resources & Genet Improv, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Yong,Tang, Jianwei,Zhang, Yelun,et al. QTL mapping for quantities of protein fractions in bread wheat (Triticum aestivum L.)[J]. THEORETICAL AND APPLIED GENETICS,2011,122(5):971-987.
APA	Zhang, Yong.,Tang, Jianwei.,Zhang, Yelun.,Yan, Jun.,Xiao, Yonggui.,...&He, Zhonghu.(2011).QTL mapping for quantities of protein fractions in bread wheat (Triticum aestivum L.).THEORETICAL AND APPLIED GENETICS,122(5),971-987.
MLA	Zhang, Yong,et al."QTL mapping for quantities of protein fractions in bread wheat (Triticum aestivum L.)".THEORETICAL AND APPLIED GENETICS 122.5(2011):971-987.