【摘要】 以山西省地方品种和选育品种为材料,对其质量性状、数量性状及SSR标记进行了遗传多样性分析,旨在探明地方品种与选育品种之间遗传多样性的差异,为山西省大豆品种资源的研究与利用提供理论依据。结果表明,184份选育品种和180份地方品种在8个质量性状、5个数量性状上都存在较广泛的遗传多样性。选育品种与地方品种相比,遗传多样性较低。在质量性状方面,选育品种的籽粒颜色、生长习性变异性呈下降趋势,而脐色和茸毛色都表现出增加的趋势;在数量性状方面,除粗蛋白低于选育品种外,地方品种的变异程度高于选育品种。对两类品种各13份材料进行SSR分析,结果表明,45个SSR位点基本可以将地方品种和选育品种分开,表明地方品种和选育品种在分子水平上也发生了一定的分化,但地方品种的遗传多样性要高于选育品种。表型和分子检测结果都表明,山西大豆品种的选育在一定程度上降低了遗传多样性。更多还原

【Abstract】 The genetic diversity of 180 landrace and 184 bred varieties of soybean in Shanxi were studied. Theresults showed that the landrace varieties had a higher genetic diversity either in qualitative or quantitive traits. The variation of seed color and growth habit in bred varieties had decreased, but those of hilum color and pubesencecolor had a trend to increase. In quantitive traits, except raw seed protein content, the variation in landrace varie-ties had higher level than that in bred varieties. We also selected 13 landrace and 13 bred varieties to analyze with45 pair SSR primers. The results showed that 26 varieties were divided into two groups, landrace and bred varie-ties, and two kinds of varieties had some genetic variation in molecular level. It seems that soybean breeding canbring reduction of genetic diversity in some extent.更多还原