Genetic diversity in three Pinnus massoniana populations in different elevations and its relationship with ecological factors
三个不同海拔梯度马尾松种群的遗传多样性及其与生态因子的相关性

High genetic diversity was found in these populations,and the sum of SSD was 8164.Genetic diversity in three Pinus massoniana populations of different elevation was determined by means of RAPD and they were 7.48,7 40,7 03.The differentiation level among populations was low.Less than 2% of genetic diversity was attributed to the differentiation among the populations while more than 97% resided within the different populations.Correlation analysis shows a significant relation between genetic diversity and total nitrogen( P <0.05),and no significant relation was observed between genetic diversity and other ecological factors.Thought the genetic distance among the populations was very small,there was a significant relation between it and the distance of elevation.