Mapping QTLs for stomatal density and size under drought stress in wheat (Triticum aestivum L.)

doi:10.1016/S2095-3119(15)61264-3

	Mapping QTLs for stomatal density and size under drought stress in wheat (Triticum aestivum L.)
	Wang Shu-guang 1; Jia Shou-shan 1; Sun Dai-zhen 1; Fan Hua 1; Chang Xiao-ping 2; Jing Rui-lian 2
刊名	JOURNAL OF INTEGRATIVE AGRICULTURE
	2016
卷号	15 期号:9 页码:1955-1967
关键词	wheat (Triticum aestivum L.) stomatal density stomatal length stomatal width quantitative trait loci
ISSN号	2095-3119
DOI	10.1016/S2095-3119(15)61264-3
通讯作者	Wang Shu-guang
英文摘要	Stomatal density and size affect plant water use efficiency, photosynthsis rate and yield. The objective of this study was to gain insights into the variation and genetic basis of stomatal density and size during grain filling under drought stress (DS) and well-watered (WW) conditions. The doubled haploid population derived from a cross of wheat cultivars Hanxuan 10 (H10), a female parent, and Lumai 14 (L14), a male parent, was used for phenotyping at the heading, flowering, and mid- and late grain filling stages along with established amplified fragment length polymorphism (AFLP) and simple sequence repeat (SSR) markers. The stomatal density of doubled haploid (DH) lines was gradually increased, while the stomatal lengths and widths were gradually decreased during grain filling stage. Twenty additive QTLs and 19 pairs of epistatic QTLs for the 3 traits were identified under DS. The other 20 QTLs and 25 pairs epistatic QTLs were obtained under WW. Most QTLs made more than 10% contributions to the total phenotypic variations at one growth stage under DS or WW. Furthermore, QTLs for stomatal density near Xwmc74 and Xgwm291 located on chromosome 5A were tightly linked to previously reported QTLs regulating total number of spikelets per spike, number of sterile spikelets per spike and proportion of fertile spikelets per spike. Qsw-2D-1 was detected across stages, and was in the same marker region as a major QTL for plant height, QPH.cgb-2D.1. These indicate that these QTLs on chromosomes 5A and 2D are involved in regulating these agronomic traits and are valuable for molecular breeding.
学科主题	Agriculture, Multidisciplinary
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000383411900003
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/105356]
专题	作物科学研究所_分子生物学系
作者单位	1.Shanxi Agr Univ, Coll Agron, Taigu 030801, Peoples R China 2.Chinese Acad Agr Sci, Inst Crop Sci, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Wang Shu-guang,Jia Shou-shan,Sun Dai-zhen,et al. Mapping QTLs for stomatal density and size under drought stress in wheat (Triticum aestivum L.)[J]. JOURNAL OF INTEGRATIVE AGRICULTURE,2016,15(9):1955-1967.
APA	Wang Shu-guang,Jia Shou-shan,Sun Dai-zhen,Fan Hua,Chang Xiao-ping,&Jing Rui-lian.(2016).Mapping QTLs for stomatal density and size under drought stress in wheat (Triticum aestivum L.).JOURNAL OF INTEGRATIVE AGRICULTURE,15(9),1955-1967.
MLA	Wang Shu-guang,et al."Mapping QTLs for stomatal density and size under drought stress in wheat (Triticum aestivum L.)".JOURNAL OF INTEGRATIVE AGRICULTURE 15.9(2016):1955-1967.