V.amurensis is the species of dioecism. For the reason of exogamy strictly, the variation of characters is very complicated. The differences in character variability between different plants were greater, so the selection potential for V. amurensis resources was higher whether for the direct use or for the indirect use .Therefore, it could pay attentions to the variability within the species in the selectiong, preserving and evaluating of the resources,Through the sex conversion experiment, it w...