关键词: 中国樱桃, SSR, 遗传多样性, 遗传分化

Abstract:

Simple sequence repeat（SSR）markers were employed to investigate the genetic diversity and genetic structure of 280 individuals sampled from 14 natural populations of Prunus pseudocerasus. A total of 80 alleles of 11 loci were detected，and the number of alleles per locus ranged from 4 to 13. The relatively high levels of gene diversity（h，0.5431–0.7151）and Shannon’s diversity（I，0.9057–1.4684） revealed relatively rich genetic diversity among the 14 Prunus pseudocerasus populations. The hierarchical analysis of molecular variance（AMOVA）revealed the genetic differentiation mainly within populations（70.00%）. Mantel test revealed a significant correlation between geographic and genetic distances（r = 0.472，P = 0.011）. Therefore，the genetic diversity was high both at the population level（PPL = 100%，h = 0.643，I = 1.207）and the species level（PPL = 100%，h = 0.743，I = 1.591）.

Key words: Prunus pseudocerasus, SSR, genetic diversity, genetic differentiation