小麦高分子量麦谷蛋白亚基遗传变异及其与品质和其它农艺性状关系的研究

本研究应用SDS-PAGE技术分析了国内外757份供试材料的高分子量（HMW）麦谷蛋白亚基组成。共发现65种HMW亚基组成，其中53种为常见型，12种为罕见型。国外品种的亚基组合数多于国内品种，国内育成品种又多于国内地方品种。作者还发现了部分罕见亚基，即由Glu-D1编码的亚基2.2+12，2+10，2，12以及前人未曾发现的3个亚基。研究

Studies on Inheritance and Variation of HMW Glutenin Subunits and Their Correlation with Quality and Other Agronomic Characters in Wheat

The grain protein of 757 wheat samples in and out of China was fractionated by SDS-PAGE to determine their HMW glutenin subunit composition. 65 HMW glutenin subunit compositions (53 common ones and 12 rare ones)were found. For the number of the subunit compositions,foreign varieties were more than Chinese ones,and Chinese improved varieties were more than local ones. Authors also found some rare subunits which were 2. 2+12,2+10,2 and 12 coded by Glu-D1 and three subunits which have not been detected. The correlations of HMW glutenin subunits with quality and other agronomic characters were studied,and it was shown by variance analysis that there was significant difference among the subunit compositions for ten characters (Zeleny sedimentation value,valorimeter value, dough stable time, development time breakage time, mixing tolerence, weakness, flour water absorption, dry gluten content, wet gluten content), and not significant difference for seven characters (flour yield,protein content,grain hardness, grain number per spike, length of spike, thousandgrain weight, heigt of plant). Few of wheat cultivars,especially local ones in China,had the subunits 5+10,1 related with high quality, which partly explained why wheat cultivars of China had poorer bread making quality. The new and more practical Glu-1 quality score system in which the effects of both loci and alleles were considered was established on the basis of more quality characters.