Abstract
Ostryopsis (Betulaceae) is a samll genus endemic to China with only two species. Both of them play an important role in restoring the local ecosystems. The distribution of genetic diversity between and within populations in each species are important to further utilize the wild genetic resources and explore the interspecific divergence. In this study, we developed 10 microsatellite loci from O. davidiana by the combining biotin capture method for the first time. A total of 27 microsatellite sequences were recovered through screening the library and 10 of them are polymorphic. The number of alleles per locus in 18 sampled individuals ranged from 3 to 6, expected heterozygosity and observed heterozygosity ranged from 0.2958 to 0.4767 and from 0.1591 to 0.2997, respectively. In addition, all markers have been crossly checked in the other congeneric species. These microsatellite markers would together provide a useful tool for investigating the genetic diversity and structure of both species and speciation mechanism between them.
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