中文摘要：

为揭示云南松（Pinus yunnanensis Franch.）不同海拔群体表型变异程度和变异规律,以天然分布的云南松为研究对象,采用巢氏方差分析、相关分析等方法,调查云南省丽江、宁蒗和元谋3个地点不同海拔群体的针叶表型性状。结果表明：云南松表型性状在群体间和群体内均存在极其丰富的变异。丽江采样地点群体间平均表型分化系数（VST）为29.96%,小于群体内变异（70.04%）;表型变异系数（CV）为24.93%,变化幅度13.63%～35.09%。宁蒗采样地点群体间平均表型分化系数为26.74%,小于群体内变异（73.26%）;表型变异系数变化于11.96%～37.19%,平均24.18%。元谋采样地点群体间平均表型分化系数为27.79%,小于群体内变异（72.21%）;表型变异系数波动于14.28%～41.3%,平均23.41%,群体内的变异是表型变异的主要来源。9个不同群体的Shannon-Wiener多样性指数为1.940 3,表明云南松群体有较高的表型多样性。相关分析表明,云南松针叶表型性状及多样性指数与海拔高度间的相关性不显著。

英文摘要：

In this study,we analyzed the needle phenotypic variation of Pinus yunnanensis natural populations at three different altitudes in three locations of Yunnan Province, investigate the level of needle phenotypic diversity by using ANOVA analysis and correlation analysis.The results showed that there were significant differences in phenotypic variation in all needle phenotypic traits among populations and within population.The mean phenotypic differentiation coefficient（VST）was 29.96%,which was less than that of within populations （70.04%）;Coefficient of variation （CV） of all traits ranged from 13.63% to 35.09%,with a mean of 24.93% in Lijiang.The mean VST was 26.74%,which was less than that of within populations（73.26%）;CV of all traits was from 11.96% to 37.19%,with the average of 24.18% in Ninglang. The mean VST was 27.79%,which was less than that of within populations（72.21%）;CV of all traits varied from 14.28% to 41.3%,with an average of 23.41% in Yuanmou.Shannon-Wiener of the nine different populations was 1.940 3,and which showed that there was higher phenotypic diversity in populations of P.yunnanensis.Correlation analysis showed that P.yunnanensis phenotypic traits and phenotypic diversity index was no significant relation with altitude.