Analysis of Genetic Diversity of Glycine soja in Northeast China

Based on 15 ecological regions from Northeast China,genetic diversities of 3 069 wild soybean accessions were analyzed using 11 main phenotypic characters. The result showed that: The wild soybean diversity index of Heilongjiang varied from 0. 580 to 0. 952; diversity index of Jilin varieties varied from 0. 757 to 0. 865; diversity index in Liaoning varied from0. 666 to 0. 922. The greatest diversity was found in the South and Middle Heilongjiang,and in the Middle of Liaoning; the lowest diversity was found in the region of Heilongjiang where suitable for the very early maturity soybean. According to the results,Northeast of Songnen plain,Sanjiang plain and North Liaohe plain are the enrichment region for wild soybean diversity.Extensive genetic diversity was found for protein content,and a little diversity was found for hilum color and flower color. The coefficient of variation of Liaoning,Jilin and Heilongjiang is 35. 03,33. 31 and 30. 23 respectively.