相同遗传背景下7和7+8亚基对小麦品质的影响  

Affecting of High Molecular Weight-glutenin Subunit 7 and 7+8 on Wheat Quality

作　　者：康志钰[1] 王建军[1] 李剑峰[2] 尚勋武[2] 

机构地区：[1]云南农业大学农学与生物技术学院,云南昆明650201 [2]甘肃农业大学农学院,甘肃兰州730070

出　　处：《云南农业大学学报》2007年第1期23-25,29,共4页Journal of Yunnan Agricultural University

基　　金：甘肃省自然基金项目暨中青年科技基金项目资助(ZS021-A25-045-N);云南省自然科学基金项目资助(2004C0004R)

摘　　要：高分子量麦谷蛋白与小麦品质的关系十分密切。但分析结果往往因所用材料而有差异,主要是不能消除不同遗传背景的影响。春小麦品种高原602所含高分子量麦谷蛋白亚基为Nu ll,7和2+11,永良12号所含高分子量麦谷蛋白亚基为Nu ll,7+8和2+11,二者差异仅在于G lu-B1位点的高分子量麦谷蛋白亚基不同,即永良12号比高原602多了个8亚基。用高原602和永良12号分别按正、反交组合进行杂交,在杂种F3代,选择只有7亚基和7+8亚基差异的单株,在遗传背景相似的条件下,研究7和7+8亚基对小麦品质的影响。结果表明:7亚基和7+8亚基两组籽粒各项品质指标的t测验结果均不显著,说明7亚基和7+8亚基对小麦品质的影响无明显差异,即8亚基的有无对7亚基的作用无明显影响。Wheat quality is affected by many factors. High Molecular Weight Glutenin Subunit （HMW-GS） is one of the most important factors. Under the different genetic background, the result will be different. Gaoyuan 602 has HMW-GS null, 7 and 5 ＋ 10, and Yongliang 12 has HMW-GS null, 7 ＋ 8 and 2 ＋ 11. The only difference between Gaoyuan 602 and Yongliang 12 is the HMW-GS 7 and 7 ＋ 8, which all located on Glu-B1. Made a pair of reciprocal cross combination between Gaoyuan 602 and Yongliang 12 in order to make the hybrid has the same genetic background, and to study the affecting of HMW-GS 7 and 7 ＋ 8 on wheat quality. The results indicated that, on wheat quality, it had no difference between HMW-GS 7 and 7 ＋8, the subunit effect was E7＋8 = E17＋18.

关 键 词：小麦 品质 高分子量麦谷蛋白亚基 

分 类 号：S512.1[农业科学—作物学]