云南木香花天然居群的表型多样性研究

在云南天然分布区选择5个有代表性的木香花居群为研究对象,应用居群生物学的原理和方法对木香花的15个表型性状进行多样性分析.结果表明:木香花表型性状在居群间和局群内存在广泛的变异,15个性状的F值范围为1.92～370.6,绝大多数性状在居群间和居群内均达到显著或极显著水平;平均表型分化系数为61.10%,居群间变异(35.92%)大于居群内变异(20.44%),说明居群间的变异是木香花的主要变异来源;对其地理因子与15个表型性状相关性分析表明经度对性状的影响较大;利用群体间欧氏距离进行的UPG-MA聚类分析结果显示,5个天然群体可以划分为2类.

A study on phenotypic diversities in the natural population of Rosa banksiae Ait. in Yunnan

15 phenotypic characters of Rosa banksiae from five natural populations in Yunnan were analyzed applying the population biological theories and methods.The results showed that variation was widely distributed among and intra-populations,Fvalue of the 15 characters were from 1.92 to 370.6,and most traits were quite significantly or significantly diversified both among and within populations;The mean phenotypic differentiation coefficient of the 15 characters was 61.10%,and the variation among populations was higher,which indicated that the variation among populations was the main source of the phenotypic variation;The Correlation analysis showed that most characters were affected by different latitudes;Five natural populations was arranged into 2 groups by UPGMAcluster analysis.