作　　者： ; ; ; ; ; ; ; ;

机构地区： 中国农业大学农学与生物技术学院农业部作物基因组学与遗传改良重点开放实验室

出　　处： 《西北农业学报》 2007年第1期145-148,共4页

摘　　要： 以我国自育的250个小麦品种(系)为材料,分析了我国小麦品种HMW-GS的组成和分布。结果显示,我国小麦品种(系)的HMW-GS变异类型非常丰富,总共发现了19种变异类型,其中包括4种稀有变异类型;从遗传变异指数可以看出,HMW-GS等位基因遗传多样性Glu-B1>Glu-A1>Glu-D1;从亚基的组成和分布来看,我国小麦品种中优质亚基的比例是比较低的,在Glu-A1位点,2*亚基的比例为15.2%,在Glu-B1位点,14+15亚基的比例为12.4%,17+18亚基的比例为2.4%,在Glu-D1位点,5+10亚基的比例为23.6%。 In this study, 250 Chinese wheat Varieties（lines） were used to analyse the diversity of HMW-GS. The results were as follows： There was a great diversity of HMW-GS among Chinese wheat, 19 HMW-GS variation types were found including 4 unusual types. By comparing the diversity of the alleles of HMW-GS according to the index of genetic variability, the order could be got as Glu- B1〉Glu-Al〉Glu-D1. In addition, from the components and distribution of the HMW-GS , it could be concluded that the proportion of the subunit with good bread-making such as 2^＊ , 5＋10, 14＋15 and 17＋ 18 was relatively lower, the percents were 15.2 %, 12.4%, 2.4 %and 23.6 % respectively.

关 键 词： 小麦 遗传组成

领　　域： [农业科学]