林业与生态科学2026，Vol.41Issue(2)：28-41,14.DOI:10.13320/j.cnki.hjfor.2026.0014
河北省太行山区实生核桃果实性状综合评价及优株筛选
The comprehensive evaluation of fruit traits of natural walnut resources and selection of superior trees in the Taihang Mountain Area of Hebei Province
摘要
Abstract
Sixty walnut trees with specific traits from the Taihang Mountain area in Hebei Province were used as experimental materials.Diversity and correlation analysis were conducted on 16 phenotypic traits of walnut.The principal component analysis,cluster analysis,and fuzzy membership function methods were adopted to conduct a comprehensive evaluation of the superior walnut germplasm,with the goal of providing a scientific foundation for the innovation and breeding of walnut germplasm resources in the Taihang Mountain area.The results showed that the 16 quantitative traits of the 60 walnut resources exhibited highly significant variation levels,with variation coefficients ranging from 4.11％to 37.98％.The evaluation of walnut fruit traits indicators could be simplified into 5 principal components,with a cumulative variance contribution rate of 80.602％.With a Euclidean distance of 6,the 60 walnut germplasms were divided into four different clusters:Cluster 1 consisted of walnut germplasm resources with more average performance;Cluster 2 consisted of small walnuts with small dimensions and light weight;Cluster 3 consisted of walnuts with a large fruit shape index and elongated fruit shape;Cluster 4 consisted of walnuts with large dimensions,heavy nut weight,low fat content,and high total protein content.Based on the comprehensive scores of the elite walnut trees,outstanding individuals such as Laiyuan No.2,Shexian No.6,Laiyuan No.1,Shexian No.14,and Laiyuan No.4 were selected.In summary,the 60 walnut germplasm resources showed a large amount of genetic variation and high genetic diversity,which can be divided into four clusters,and five superior strains were selected.This can provide valuable references for the cultivation of walnuts in the Taihang Mountain area.关键词
核桃/种质资源/主成分分析/综合评价Key words
walnut/germplasm resources/principal component analysis/comprehensive evaluation分类
农业科技引用本文复制引用
王浩彤,丁新宇,贾鹏,梁海永,贾志华,齐国辉..河北省太行山区实生核桃果实性状综合评价及优株筛选[J].林业与生态科学,2026,41(2):28-41,14.基金项目
河北省重点研发计划项目子课题"核桃现代种业科技创新"(21326304D-2) （21326304D-2）
国家重点研发计划子课题"适宜加工核桃品种筛选及配套栽培技术研发与示范"(2022YFD1600402-02) （2022YFD1600402-02）
河北省现代农业产业产业技术体系干果产业创新团队核桃新品种选育与栽培岗(HBCT2024190205). （HBCT2024190205）
