外引大豆种质资源在新疆生态区的遗传多样性分析

[目的]促进外引大豆种质资源的有效利用,为新疆大豆育种和种质创新提供依据.[方法]采用数量性状多样性统计和聚类分析方法,对149份外引大豆种质资源的8个主要农艺性状和2个籽粒性状进行遗传多样性分析.[结果]149份大豆种质资源主要来源于11个国家和地区,具有较高的变异系数,变异范围为12.48;～67.13;,其中单株荚数、单株粒数和单株粒重的变异系数最高,达60;以上；生育期的变异系数最低,为12.48;；基于10个农艺性状的聚类分析将149份材料聚为2大类5亚类,聚类结果与材料地理来源具有一定相关性.[结论]该批种质资源极大丰富了新疆大豆的遗传多样性,为新疆大豆育种奠定了基础.

Preliminary Analysis of Genetic Diversity of Introduced Soybean Germplasm in Xinjiang Ecological Region

【Objective】The purpose of this project was to promote the effective use of introduced soybean germphlasm in Xinjiang and provide basis for choosing parents when creating a new cross combination.【Method】Eight primary agronomic characters and two kernel traits were used to evaluate genetic diversity of 149 soybean germplasm from different countries.【Result】The results showed that 149 soybean germplasm from 11 nations and areas such as Japan and America et al.,had high variation coefficient of 8 characters ranged from 12.48%to 67.13%,and the largest variation coefficient was found in Pods per plant,Seeds per plant and Seed weight per plant exceed 60%;the smallest coefficient of variation to maturity was 12.48%. The results also showed that the 149 varieties could be divided into 2 groups,5 sub - groups according to 8 agronomic traits and 2 seed traits.The results of clustering showed some rules in the geographical distribution.【Conclusion】The 149 varieties increased genetic diversity of Xinjiang soybean germplasm,and were utilized in broadening genetic basis of Xinjiang soybean cultivars.