【摘要】 利用ISSR分子标记对新疆白梭梭4个居群,105个个体进行了遗传多样性的比较分析。在供试材料中,11个引物共扩增出171个多态位点,多态位点百分率为84.85%,4个居群的多态位点百分率差异在33.92%~40.35%之间。Shannon多样性指数(I)为0.3518,物种水平的Nei基因多样度(h)为0.3482。遗传变异分析表明,物种水平的居群间遗传分化系数Gst为0.6238,居群间的基因流Nm为0.3016。遗传分析表明吐鲁番居群和甘家湖居群的遗传距离最近。更多还原

【Abstract】 ISSR molecular markers were used to detect genetic diversity of 105 individuals in four populations of Haloxylon persicum.171 polymorphic bands were induced by amplication primers.Percentage of polymorphic bands is 84.85% and the difference among four populations ranged from 33.92% to 40.35%.Shannon’s indices of diversity (I) is 0.3518 and Nei’s gene diversity(h) is 0.3482 respectively.Genetic variance analysis showed that the coefficient of gene differentiation in the species is 0.6238 and the gene flow is 0.3016 among populations.Genetic distance and cluster analysis indicated that the populations of Ganjiahu and Tulufan had the smallest genetic difference.更多还原