家畜生态学报2026，Vol.47Issue(4)：70-77,8.DOI:10.3969/j.issn.1673-1182.2026.04.010
三江源区6个肉果草种群表型性状变异及其对生境因子的响应
Phenotypic Variation of Six Lancea tibetica Populations in the Sanjiangyuan Region and Their Responses to Habitat Factors
摘要
Abstract
This study aimed to investigate the phenotypic trait diversity of wild Lancea tibetica re-sources in the Three-River-Source(Sanjiangyuan)Region,analyze the degree of phenotypic differentiation and population variation characteristics,fully explore its wild resources,and extract its intrinsic compo-nents in a targeted manner,so as to provide research data for breeding high-medicinal-value varieties.Dif-ferential and principal component analyses were conducted on 14 phenotypic traits of 6 major and repre-sentative Lancea tibetica populations in the Three-River-Source Region,along with correlation analysis be-tween phenotypic traits and habitat factors.The results showed rich phenotypic variation and different lev-els of differentiation among the populations,with inter-population coefficients of variation ranging from 1.80％to 33.30％for the 14 traits.Leaf width,leaf thickness,and root number exhibited the highest coef-ficients of variation,at 33.30％,31.60％,and 30.90％,respectively.Correlation analysis indicated that significant correlations(P＜0.05)existed among 12 of the phenotypic traits,except for sepal length and root-shoot ratio.Habitat factors significantly influenced plant height,while latitude showed significant negative correlations with leaf length,leaf thickness,and leaf width(P＜0.05),with correlation coeffi-cients of-0.870,-0.833,and-0.902,respectively.Soil electrical conductivity was significantly nega-tively correlated with root number,seed longitudinal diameter,sepal length,and fruit longitudinal diame-ter(P＜0.05),with correlation coefficients of--0.841,-0.868,-0.888,and-0.851,respectively.The first two principal components accounted for 74.288％of the total variance,effectively reflecting the genet-ic information of the phenotypic traits.In conclusion,Lancea tibetica in the Three-River-Source Region exhibits substantial phenotypic variation and holds broad potential for development and utilization.This study provides a theoretical foundation for the exploitation and use of Lancea tibetica germplasm re-sources.关键词
肉果草/表型性状/多样性分析/青海/生境因子Key words
Lancea tibetica/phenotypic traits/diversity analysis/Qinghai/habitat factor分类
农业科技引用本文复制引用
蔡宗程,吕亮雨,刘青青,高佩,刘永璐,刘艳,王欣,施建军..三江源区6个肉果草种群表型性状变异及其对生境因子的响应[J].家畜生态学报,2026,47(4):70-77,8.基金项目
科技部专项科研基金(2019QZKK1002) （2019QZKK1002）
国家重点研发计划(302108-K032201-b-b1) （302108-K032201-b-b1）
