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利用酸性聚丙烯酰胺凝胶电泳(A-PAGE)方法,鉴定分析了我国部分重要小麦品种或种质醇溶蛋白Gli-1和Gli-2编码位点等位基因组成特点。 36个品种的研究结果表明,我国小麦品种在醇溶蛋白几个主要位点上均存在较大的变异度,Nei氏遗传变异系数(H)达0.775。6个位点一共检测到59个不同的醇溶蛋白等位基因,其中出现频率较高的有8个等位基因,即Gli-B2g(55.56%)、Gli-Dlk(50%)、Cli-Ala(33.33%)、Gli-A2f(30.56%)、Gli-Bib(22.22%)、GliDlf(22.22%)、Gli-B2b(22.22%)和Gli-D2g(22.22%)。国外品种中很少的4个等位基因(Gli-D1b、Gli-A2c、Gli-B2g和Gli-D2g)在我国具有较高的频率。可作为1BL/1RS易位标记的Gli-B1l等位基因在中国品种中的频率较高。另外,还发现一些优质醇溶蛋白等位基因(如Gli-B1b、Gli-B2c、Gli-A2b等)在我国品种中出现的频率很低,这可能是中国小麦品种品质普遍较差的一个原因。
The characteristics of the alleles of Gli-1 and Gli-2 encoding loci in some important wheat cultivars or germplasms in China were identified and analyzed by using acidic polyacrylamide gel electrophoresis (A-PAGE). The results of 36 cultivars showed that there was a large variation in several major gliadin loci in Chinese wheat cultivars. The genetic variation coefficient (H) of Nei’s was 0.775.6 and a total of 59 There were 8 alleles with high frequency of occurrence, including Gli-B2g (55.56%), Gli-Dlk (50%) and Cli-Ala (33.33% ), Gli-A2f (30.56%), Gli-Bib (22.22%), GliDlf (22.22%), Gli-B2b (22.22%) and Gli-D2g (22.22%). Few foreign alleles (Gli-D1b, Gli-A2c, Gli-B2g and Gli-D2g) have a high frequency in our country. The Gli-B1l allele, which can be used as a 1BL / 1RS translocation marker, has a higher frequency in Chinese breeds. In addition, it was also found that the occurrence frequency of some gliadin alleles (such as Gli-B1b, Gli-B2c, Gli-A2b, etc.) in Chinese varieties is very low, which may be one of the reasons for the generally poor quality of Chinese wheat varieties .