华北农学报2012，Vol.27Issue(5)：72-79,8.
基于SRAP的小麦籽粒性状QTL定位
Locating the Quantitative Trait Loci(QTL)of Wheat Yield-related Traits Based on SRAP Markers
摘要
Abstract
Grain size and morphology influence the yield and milling quality of bread wheat. The objective of this study was to identify quantitative trait loci (QTL) controlling kernel traits in wheat. Using a F2 population derived from Chinese winter wheat varieties Xinong 817 and China spring,four agronomic traits of grain length ( GL) , grain width (GW) ,grain thickness (GT) and 1000-grain weight (TGW) were evaluated. Based on F, population, a genetic map comprising SRAP markers and SSR anchor markers was generated. According to the genetic map and phenotypic data,quantitative trait loci (QTL) were located for these agronomic traits using the inclusive composite interval mapping (ICIM) method. A total of 50 QTLs involving 1 A ,2A ,2D ,3B ,4B ,4D ,5D ,6A ,6D and 7A wheat chromosomes and 5 linkage groups were identified for these four traits. Among them, 16 , 13 , 10 and 11 QTLs for GL,GW,GT and TGW were identified, respectively. In addition, 15 genomic regions with plenty of QTLs were detected on 1A ,2D ,4D,5D ,6A ,7A and 4 linkage groups in this study.关键词
小麦籽粒性状/SRAP和SSR/QTL定位Key words
Wheat yield-related traits/ SRAP and SSR /Quantitative trait loci分类
农业科技引用本文复制引用
李清峰,马守才,王志军,史秀秀,毕晓静,陈晓文,张改生..基于SRAP的小麦籽粒性状QTL定位[J].华北农学报,2012,27(5):72-79,8.基金项目
"863"计划子课题(2009AA101102) （2009AA101102）
陕西省自然科学基金项目(2012JM3003) （2012JM3003）
