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利用SSR标记和系统聚类分析,对92个湖北夏大豆种质进行遗传多样性分析。结果表明,28个SSR位点检测到134个等位变异,每个SSR位点的等位变异范围为2~9个,平均4.78个。鄂西南山区的遗传多样性指数和等位变异数最高,其次为江汉平原区。83.6%以上的遗传差异是由于地区差异引起,表现较高程度的地理分化。系统聚类将92个大豆品种分为3个类群,Ⅰ类和Ⅲ类分别以鄂西南山区品种和江汉平原区品种为主。鄂西南山区和江汉平原区的大豆地方品种表现遗传多样性水平较高。
The genetic diversity of 92 Hubei summer soybean germplasms was analyzed by SSR markers and cluster analysis. The results showed that 134 alleles were detected in 28 SSR loci, and the allelic variation range of each SSR locus ranged from 2 to 9 with an average of 4.78. The genetic diversity index and allelic variance of the mountainous areas in southwest Hubei Province were the highest, followed by the Jianghan Plain area. More than 83.6% of the genetic differences were caused by geographical differences and showed a higher degree of geographical differentiation. The systematic clustering divides 92 soybean cultivars into 3 groups, of which Ⅰ and Ⅲ are mainly varieties of mountainous areas in southwestern Hubei and Jianghan Plain. The soybean varieties in southwestern Hubei and Jianghan Plain showed higher genetic diversity.