东北林业大学学报2026，Vol.54Issue(6)：88-99,12.
蒙古栎主要分布区天然群体表型多样性
Phenotypic Diversity of Natural Populations in the Main Distribution Areas of Quercus mongolica
摘要
Abstract
This study investigated the resource diversity of Quercus mongolica in different populations to reveal the mechanism underlying its phenotypic diversity,providing a reference for the conservation of Q.mongolica resources and the breeding of superior populations.Thirty-six natural populations of Q.mongolica from Northeast China,North China,and Inner Mongolia were used as materials.Seventeen phenotypic traits,including leaf and branch characteristics,were measured,combined with geo-climatic factors.Phenotypic diversity and variation patterns were analyzed using the phenotypic varia-tion rate,principal component analysis(PCA),and correlation analysis.The results showed that the coefficient of pheno-typic variation of Q.mongolica populations ranged from 12.11%to 46.08%.Variation among populations(66.09%of to-tal variance)was significantly higher than that within populations(20.77%of total variance),and the phenotypic differ-entiation coefficient ranged from 43.60%to 87.55%.The Shannon-Weaver diversity index was the highest for diameter at breast height(DBH)(2.69)and the lowest for leaf area(0.34).Relatively high genetic diversity was observed in popu-lations from Horqin Left Rear Banner,Tongliao City,Inner Mongolia.Principal component analysis revealed that DBH,leaf size,and leaf shape were the main drivers of phenotypic differentiation.Cluster analysis divided the 36 populations in-to two groups,and independent population differentiation was caused by environmental isolation and local climatic differ-ences.Q.mongolica populations possess abundant genetic variation,and phenotypic trait variation mainly occurs among populations.Phenotypic plasticity and resource allocation trade-offs have evolved under long-term natural selection,enab-ling the species to adapt to diverse habitats.关键词
蒙古栎/天然群体/表型多样性/遗传变异/地理气候因子Key words
Quercus mongolica/Natural population/Phenotypic diversity/Genetic variation/Geo-climatic factors分类
农业科技引用本文复制引用
张晓林,杨明灏,李翔宇,宋晓琛,王玉涛,陆秀君..蒙古栎主要分布区天然群体表型多样性[J].东北林业大学学报,2026,54(6):88-99,12.基金项目
辽宁省教育厅基本科研项目(JYTTD2024002). （JYTTD2024002）
