Object To study the population variations from plants of
Isodon (Schrad. Ex Benth.) Kudo at DNA level. Methods Eight plant
populations of
Isodon (Schrad. Ex Benth.) Kudo collected from Zhejing Province were analyzed by RAPD. The results for eight
populations from three species of Isodon (Schrad. ex Benth.) Kudo were analyzed by clustering analysis SPSS10.0 and Detrended Correspondence Analysis (DCA) CANOCO 3.10. Ten of the 70 random primers were tested to possess the stronger detecting effect of polymorphous character. Results A total of 144 bands was amplified by the 10 primers, 7.64% of the total bands was 11 monomorphic, 92.36% of the total bands was 133 polymorphic. The results indicated that the genetic variations existed within the populations of the same species or the different species in Zhejiang Province, and the variances within the populations of I. macrocalyx were slightly smaller than those of I. amethystoides. Conclusion There are some genetic backgrounds in the variations of the morphology and the chemical compounds in the species of I. amethystoides.