Polymorphism of male cones in populations of Pinus yunnanensis Franch.
YU Hong1,2), ZHENG Shu-Song1), HUANG Rui-Fu1,2)
1) Laboratory of Evolutionary Ecology ,Yunnan University , Kunming 6500912) Laboratory of Systematic and Evolutionary Botany , Institute of Botany , Chinese Academy of Sciences , Beijing 100093