河南农业科学2024，Vol.53Issue(8)：61-69,9.DOI:10.15933/j.cnki.1004-3268.2024.08.007
三江源地区野生多枝黄耆资源表型性状多样性及与环境因子的相关性分析
Diversity of Phenotypic Traits of Wild Astragalus polycladus Resource and Their Correlations with Environmental Factors in Sanjiangyuan Area
摘要
Abstract
A total of 150 wild Astragalus polycladus plants from 6 cities(counties,towns)in Sanjiangyuan area were used as materials.The diversity,correlation and principal component analysis of 18 phenotypic traits were conducted,and their correlations with environmental factors were analyzed,so as to understand the phenotypic differentiation degree and population variation characteristics of Astragalus polycladus in Sanjiangyuan area,and provide basis for breeding excellent varieties of Astragalus polycladus.The results showed that the phenotypic traits of Astragalus polycladus resource had abundant diversity in Sanjiangyuan area,and the variation coefficient of 18 phenotypic traits was 1%—29%.Among them,the variation coefficients of stem diameter of reproductive branch and stem length of reproductive branch were higher(more than 20%),while the variation coefficients of calyx length and seed thickness were the smallest(1%).There were significant difference in phenotypic traits of Astragalus polycladus under different environments.Among them,the crown width from south to north,plant height,root number,stem length of reproductive branch,leaf thickness,corolla length,corolla number,seed thickness and seed longitudinal diameter of Astragalus polycladus in Muli Town were significantly lower than the other populations.Correlation analysis showed that there was significantly positive or negative correlation among phenotypic traits except for root number and stem length of reproductive branch.At the same time,the phenotypic traits of Astragalus polycladus were positively or negatively correlated with longitude,latitude,altitude and soil pH value,and different traits were affected by environmental factors differently.Among them,the corolla number,leaf thickness and root number were greatly affected.关键词
多枝黄耆/表型性状/多样性分析/三江源地区Key words
Astragalus polycladus/Phenotypic traits/Diversity analysis/Sanjiangyuan area分类
农业科技引用本文复制引用
刘青青,蔡宗程,吕亮雨,雷莎清,张海蓉,马芳,施建军..三江源地区野生多枝黄耆资源表型性状多样性及与环境因子的相关性分析[J].河南农业科学,2024,53(8):61-69,9.基金项目
第二次青藏高原综合科学考察研究项目(2019QZKK1002) （2019QZKK1002）
国家重点研发计划项目(2021YFC3201600) （2021YFC3201600）
