PRELIMINARY STUDY OF CLUSTER ANALYSIS ON THE SOYBEAN VARIETIES IN HEILONGJIANG PROVINCE
Hu Licheng Yao Yuan Li Xralan Zhang Yuhua (The Soybean Institute of Heilongjiang Academy of Agricultural Sciences)
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.