Research on Evaluation of Comprehensive Characters of Nuts from Superior Individuals in Sichuan

In order to further explore the specific germplasm resources of walnuts in Sichuan,the indexes were comprehensively analyzed including spicate of walnut three diameter value,single fruit weight,kernel weight,kernel rate,walnut shell thickness,crude fat and crude protein on the basis of the preliminary investigation spicate walnut germplasm resources,by means of principal component analysis and walnut quality score.The results showed that (1) The cumulative variance contribution rate of principal component 1~3 was 88.49%.3 principal components and their principal component functions were identified for the main traits of spicate walnuts.The important principal components of each individual were calculated.(2)The evaluation function model of nut comprehensive characters was established,and the principal component comprehensive score of each individual was calculated.Then the comprehensive comparison and ordination were made.The order of each individual was SQLG,HSZML,CTYM,PAXH,HSLH and XJPX.(3) HSZML,HSLH and SQLG were selected as 3 superior individuals.