The effect of infochemicals on selection behavior of Wiebesia pumilae(Hymenoptera: Chalcidoidea: Agaonidae) Landscape genetics:principles and its applications for the genetic effects of habitat fragmentation Spatial distribution of root system of different riparian plant configuration modes Pollination Biology of Ficus virens var. sublanceolata in Fuzhou Microsporogenesis, development of male gametophyte in Michelia figo and their systematic significance