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利用聚类分析逐步判别统计方法,研究了50份大豆品种材料,划分成10类。并且选出了生育日数、株高、茎粗、单株荚数、单株粒数、叶形作为聚类的主要性状。研究还表明,有的类群品种性状遗传分歧与地理分布呈平行关系,而多数类群不呈平行关系。说明本地区大豆品种表现出多样性和遗传分歧的多向性,有丰富的大豆基因资源。提出了选择亲本时,除对有的性状考虑地理远缘关系外,而对与产量有关的数量性状应测定遗传距离,在距离大的类群间选择亲本材料。
Using the method of cluster analysis to discriminate the statistical method step by step, 50 soybean varieties were divided into 10 categories. The days of birth, plant height, stem diameter, pods per plant, grain number per plant, and leaf shape were selected as the main characters of clustering. The study also showed that genetic divergence of some species traits was in parallel with the geographical distribution, while most of the taxa did not show a parallel relationship. This shows that the soybean varieties in the region showed diversification and genetic diversity of the multi-directional, rich in soybean genetic resources. When selecting parents, the genetic distance should be determined for quantitative traits related to yield, and the parental material should be selected among large distances in addition to the geographic distant relationship for some traits.