文献类型：期刊文献

中文题名：蒙古栎天然群体表型多样性研究

英文题名：Study on Phenotypic Diversity of Natural Population in Quercus mongolica

作者：李文英[1] 顾万春[2]

第一作者：李文英

机构：[1]中国林业科学研究院林业科技信息研究所;[2]中国林业科学研究院林业研究所

年份：2005

卷号：41

期号：1

起止页码：49-56

中文期刊名：林业科学

外文期刊名：Scientia Silvae Sinicae

收录：CSTPCD;;Scopus;北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

基金：国家"十五"科技攻关"林木种质资源保存技术创新与利用研究"(2 0 0 1BA5 11B10 );国家重大基础性工作项目"林木种质资源收集与保存"(科技部 2 0 0 1年 13号 )的部分内容。

语种：中文

中文关键词：蒙古栎;表型性状;天然群体;顶芽;坚果;表型变异;果形;表型多样性;UPGMA聚类分析;经纬度

外文关键词：Quercus mongolica; natural population; phenotypic diversity

分类号：S792;S791

摘要：以蒙古栎全分布区的 8个天然群体为试材 ,对当年生枝的顶芽、叶、坚果、壳斗等 15个表型性状进行比较分析 ,讨论群体间和群体内的表型多样性。结果表明 ,蒙古栎种内表型性状在群体间和群体内存在着极其丰富的变异。群体平均表型分化系数 (VST)为 0 5 397,群体间变异 (5 3 97% )略大于群体内变异 (46 0 3% )。蒙古栎表型性状与地理气候因子相关分析表明 ,其种内群体表型变异呈梯度规律性 ,随着经纬度的增加 ,坚果逐渐增大 ,坚果形状由近球形向长椭球形变异 ;叶形由长倒卵形向宽倒卵形变异 ;随着海拔升高 ,坚果逐渐变小。蒙古栎表型性状(顶芽、叶、壳斗、坚果 )间存在显著或极显著的相关关系。利用群体间欧氏距离进行的UPGMA聚类分析表明 ,蒙古栎群体可以划分为 4类。
Based on field investigation and analysis of the natural distribution of Quercus mongolica in China, eight populations of Q. mongolica (Daxing’anling, Jiaying, Shuangyashan in Heilongjiang Province, Jiaohe in Jilin Province, Daqinggou in Inner Mongolia Autonomous Region, Kuandian in Liaoning Province, Wulingshan and Zanhuang in Hebei Province) were selected and investigated. Material collection and measurement were made on the eight populations(thirty individual plants each population). Morphological diversities among/within populations were discussed on the basis of traits such as the apical bud, the leaf blade, the acorn, and the cupule. Analysis of variance for all traits showed that there was significantly difference among populations and among individuals within populations.The mean phenotypic differentiation coefficient(V ST)showed that the variation among populations(53.97%) was slightly higher than that within populations. The acorn became larger, the shape of the acorn changed from nearly spherical to oblong, and the shape of leaf blade from long obovoid to broadly obovoid, upon increase of the longitude and latitude.The acorn got smaller as the altitude became higher. There existed correlations among the morphological traits mentioned above. According to the UPGMA cluster analysis based on the Euclidean distance, the populations of Q.mongolica investigated could be divided into four groups.