ABSTRACT
Objective To investigate the genetic relationships of Astragalus membranaceus and Codonopsis pilosula from the different cultivars (varieties). Methods Twenty-five samples of A. membranaceus and seventeen samples of C. Pilosula were amplified by ISSR-PCR. Genetic diversity and genetic distance were analyzed by Popgen32. UPGMA dendrogram relationship was clustered by NTSYS. Results Totally 62 and 100 loci were detected respectively from A. membranaceus and C. pilosula. All percentages of polymorphic loci (PPL) were 100%. Shannon’s information indexes (I) were 0.537 6 and 0.472 7. Nei’s genetic diversity indexes (H) were 0.361 3 and 0.307 4. A. membranaceus was divided into two groups in genetic distance 0.59, and C. pilosula was alike in 0.50. Conclusion Different cultivars (varieties) of A. membranaceus and C. pilosula had rich genetic diversities among species, and had large genetic differences.