摘要
低分子量谷蛋白亚基(LMW-GS)与小麦品质密切相关。为了给陕西小麦的品质改良提供参考依据,采用STS分子标记,检测了175份陕西小麦品种(系)Glu-A3和Glu-B3位点的等位变异组成。结果表明,陕西小麦Glu-A3位点存在4种等位变异,即Glu-A3a、Glu-A3b、Glu-A3c和Glu-A3d,分别占12.6%、1.7%、58.3%和27.4%;Glu-B3位点存在8种等位变异,即Glu-B3a、Glu-B3b、Glu-B3d、Glu-B3e、Glu-B3f、Glu-B3g、Glu-B3i和Glu-B3j,分别占4.6%、2.9%、45.7%、0.6%、2.9%、8.5%、4.0%和30.8%。在陕西不同地区小麦之间,两个位点等位变异的种类、组合及其分布比例存在差异,这可能与地区间不同的自然地理环境、饮食习惯、育种目标及亲本选择有关。
Quality properties of wheat（Triticum aestivum L.） are strongly affected by low molecular weight glutenin subunits（LMW-GS）.It is very important for improvement of wheat qualities to study the LMW-GS compositions and distribution in Shaanxi wheat cultivars and advanced lines.STS markers were used to detect the allelic variations of LMW-GS at Glu-A3 and Glu-B3 in 175 wheat cultivars and advanced lines from Shaanxi Province.Four allelic variations of LMW-GS were detected at Glu-A3 locus in Shaanxi wheats,i.e.Glu-A3a,Glu-A3b,Glu-A3c and Glu-A3d,accounting for 12.6%,1.7%,58.3% and 27.4%,respectively.And eight allelic variations were found at Glu-B3 locus,i.e.Glu-B3a,Glu-B3b,Glu-B3d,Glu-B3e,Glu-B3f,Glu-B3g,Glu-B3i and Glu-B3j,accounting for 4.6%,2.9%,45.7%,0.6%,2.9%,8.5%,4.0% and 30.8%,respectively.There were different types and combinations of LMW-GS allelic variations in three diverse regions of Shaanxi Province,which was likely related to the regional eating habits,wheat breeding programs and parental materials selected in wheat breeding.
出处
《麦类作物学报》
CAS
CSCD
北大核心
2011年第5期859-864,共6页
Journal of Triticeae Crops
基金
"948"项目(2006-G2)
小麦产业技术体系建设专项(nycytx-03)
西北农林科技大学唐仲英育种基金项目
作者简介
梁强（1983-），男，硕士，主要从事小麦遗传育种研究。
通讯作者：张晓科（1965-），男，博士，教授，博十生导师，主要从事小麦品质和适应性研究。Email：zhangxk@tom．com．
