Identification and Comprehensive Evaluation of Vegetable Soybean Germplasm Resources Suitable for Chongqing
In order to fully explore the excellent vegetable soybean germplasm materials,accurately identify the characteristics of different materials,and provide reference for the selection of vegetable soybean varieties and germplasm innovation in Chongqing.14 vegetable soybean related traits in 63 germplasm resources collected from the regional test and joint identification test in Chongqing by using diversity analysis,principal component analysis,membership function method,cluster analysis and correlation analysis were used to evaluate the soybean germplasm resources and select important characteristics.The results showed that the variation coefficients of 14 traits ranged from 8.37％to 24.90％,and large variations were effective branch number,plant height,main stem node number,effective pod number per plant and soluble sugar content had abundant variations.Principal component analysis could simplify 14 traits into 5 principal components.The first principal component was related to 500 g standard pod number,fresh 100-seed weight and standard pod width,with a contribution rate of 35.214％.The second principal component was related to plant height,the third principal component was related to soluble sugar content,starch content and protein content,the fourth principal component was related to multi-grain rate,standard pod rate and standard pod length,and the fifth principal component was related to effective pod number per plant,main stem node number and pod weight per plant.Zhexian 9 had the highest F value(2.32),and Mindou 10 the lowest F value(-2.24).We clustered different germplasms into 6 categories,among which the comprehensive germplasm of categories 5 and 6 perform optimally.The five principal components were classified into large grain type factor,plant type factor,quality factor,multi-grain pod factor and yield component factor.By analyzing the source of varieties,germplasm resources from Shanghai,Heilongjiang and Zhejiang are more suitable as parent materials for breeding in Chongqing.Based on different analysis and evaluation methods,Zhexian 9,Wanxian 3,Chengxiandou 2937,Jiaoda 33,Zhexian 2018 and other varieties have the characteristics of large seed size,high yield,high soluble sugar content and excellent quality,which are suitable for local planting and can provide excellent parent sources for local variety improvement.
Chongqingvegetable soybeanprincipal component analysismembership function methodcluster analysiscomprehensive evaluation
万方数据
维普
