Population Genetic Structure and Demographic History of Disanthus cercidifolius var.longipes

Population genetic diversity and genetic structure of Disanthus cercidifolius var.longipes were analyzed,and its population demographic history was speculated,so as to deepen understanding on its evolutionary process,and to provide a theoretical basis for conservation and utilization of its genetic resources.【Method】 Genetic diversity of 261 individuals from 12 natural populations of the species were estimated at 15 polymorphic loci using TPM13-SSR technology.All sampled individuals were genotyped using Gene Marker,genetic parameters were assessed with FSTAT,analysis of molecular variance was carried out with ARLEQUIN,Bayesian clustering analysis was conducted for all sampled individuals with STRUCTURE,and genetic bottleneck effect was detected by Bottleneck software.【Result】A total of 129 alleles were detected at 15 loci,and the mean allele number and effective allele number at each locus were8.6 and 3.5,respectively.The mean observed heterozygosity and expected heterozygosity were 0.37,0.67.At population le