中文摘要：

对150种野生种子植物基于微卫星分子标记的遗传参数进行统计,旨在分析植物的生活史性状和取样策略对各遗传参数的影响.结果表明,微卫星标记数与种群遗传分化系数（FST和RST）呈显著正相关,与多样性指数（HO和HE）呈显著负相关;取样距离加大显著提高种群间分化指数FST和RST;种群间分化指数与多样性指数呈显著负相关;异交繁殖、长寿多年生的植物总体上保持着更高的种群内遗传多样性,而自交繁殖的一年生植物具有更高的种群间遗传分化水平;在种群水平上,裸子植物的遗传多样性比被子植物高.

英文摘要：

A statistical and comparative analysis of plant genetic diversity parameters was conducted using data from 150 microsatellite-based reports. The results revealed a significant positive correlation between the num- ber of SSR markers and estimates of among-populatlon genetic diversity, but a significant negative association be- tween the former and the estimates of within-population diversity. In addition, an increase in the geographical dis- tances between the sampled populations effectively increases the FST-and RsT：Values in SSR studies. Estimates for between- and within-population diversity proved to be negatively correlated. The SSR-based analysis showed that outcrossing and long-lived perennial taxa retain most of their genetic variability within populations. By contrast, in- breeding and annual taxa allocate most of the genetic variability among populations. Furthermore, compared with either categories of angiosperm （i. e. monocotyledon and dicotyledon）, gymnosperms harbor higher genetic diversity.