Abstract
In this study, we have aimed to genetically characterize Ginkgo biloba. Nine G. biloba samples from different places of China were collected, and DNA was extracted from the leaves of these samples for inter-simple sequence repeat (ISSR) and random amplified polymorphic DNA (RAPD) analysis. ISSR analysis showed high genetic variation among the nine varieties of G. biloba; the polymorphism and similarity coefficients were 87% and 0.40–0.84, respectively. RAPD analysis also showed 93% polymorphism, and the similarity coefficients ranged from 0.44 to 0.87. Persistent genetic isolation that developed for millions of years might influence the genetic variability between the samples of G. biloba. This study generates a genetic map of G. biloba, and reports the highly variable intra-species genetic characteristics of this living fossil among different geographical locations of China. Our study also suggests that ISSR and the improved RAPD markers are useful molecular tools for the genetic characterization of plants.
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