【摘要】 用AFLP方法对灰背栎 (Quercussenescens) 8个居群进行了遗传多样性、居群遗传结构研究。TFPGA软件分析两组引物组合共产生 12 5个位点 ,其中 94个为多态位点 ,多态位点百分率为 75 2 % ,发现灰背栎居群的遗传变异水平有随着海拔升高而遗传多样性下降的趋势。Arliquin 2 0 0 0中的AMOVA分析表明灰背栎居群间分化大 ,分化指数达 φst=0 2 95 6。用PAUP软件对所有个体间的遗传关系进行了聚类分析更多还原

【Abstract】 The population variation and structure of 115 plants representing 8 populations of Quercus senescens Hand.-Mazz. were investigated by amplification fragment length polymorphism （AFLP） analysis.Using TFPGA software,94 polymorphic phenotypic patterns （75.2%） was obtained using 2 AFLP primer combinations and it was found that genetic variation of different population was negatively correlated with altitudes.Analysis of the genetic structure of populations carried out using analysis of molecular variation （by Arliquin 2.000 software）,It showed that there was a high significant population differentiation (φ_st=0.2956).And neighbour-joining dendragram also be constructed based on 2 primer combinations by PAUP software.更多还原