青冈种群克隆多样性及其与环境因子的关系

CLONAL DIVERSITY IN CYCLOBALANOPSIS GLAUCA POPULATIONS AND ITS RELATIONSHIP WITH ENVIRONMENTAL FACTORS

采用等位酶分析测定了６个青冈种群的克隆多样性。种群和种水平上每基因型含有的个体（克隆分株）数分别为１．２７０和１．５０８。青冈种群中克隆多样性较高，Ｓｉｍｐｓｏｎ＇ｓ指数平均为０．９８８２，均匀度平均为０．７９２１。８１．３％的基因型为局部分布，仅有１种（０．５％）基因型分布于７５％以上的种群中。相关分析表明Ｓｉｍｐｓｏｎ＇ｓ指数与总氮含量呈显著的负相关（ｐ＜０．０５），与其他环境因子的相关性不显著。

Clonal diversity in six Cyclobalanopsis glauca populations were determined by means of allozyme analysis.Individuals per genotype were 1270 and 1508 at population and species levels,respectively.High clonal diversity was found in the populations.Mean Simpson's diversity index for the six populations was 09882,and eveness averaged 07921. 813% of the genotypes distributed locally.Only one genotype (05%) distributed over more than 75% of the populations.Correlation analysis shows a significant relation between Simpson's index and total nitrogen (P<005),and no significant relation were observed between clonal diversity and other environmental factors.