黑龙江省大豆品种聚类分析初探

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。

PRELIMINARY STUDY OF CLUSTER ANALYSIS ON THE SOYBEAN VARIETIES IN HEILONGJIANG PROVINCE

The methods of cluster analysis and by-step discriminatiom were used to study 50 soybean varieties, and these varieties were grouped into 10 clusters by quantitative characters: days of growth, plant height, stem diameter, number of pods per plant, number of seeds per plant, leaf type. From this study it was shown that parallelism between genetic divergence and geographica distribution for varieties existed in some groups, but there was also not ia parallelisim in most groups. The results also clearly showed that there was very different for genetic divergence in soybean varieties. Therefore, soybean genetic resources is rich in Heilongjiang Province. Besides to choose geographical distance for some varietal characters, estirnatination of genetic distance of quantitative characters related to grain yield were suggested to be chosen for selecting cross parents, and to use, varieties from groups with larger different genetic distances as crossing parents.