Anatomical characteristics of leaf epidermis of Fallopia multiflora and relationships to climate factors

The epidermal characteristics of mature leaves of Fallopia multiflora from different districts were examined under light-microscope.Multi-statistical analysis was used to clarify the relation between the morphological characteristics of the leaves of F.multiflora and the climate factors.The characteristics of leaf surface including the stomata density,stomata index,stomata width and stomata length,were determined and compared.As a result,stomata were rarely observed at the upper epidermis.The stomata apparatuses on the lower epidermis were non-typical anisocytic type and anomocytic type.Stomata length was 31.1(20-44) μm,stomata width 23.1(16-38) μm,stomata index is 17.1(7.5-26.5)%,stomata density is 241.7(64-573) per square millimeter,respectively.The variations of anatomical characteristics for the lower epidermis of leaves of F.multiflora from different districts were definitely.The results of multi-statistical analysis showed that the stomata length,width and stomata density were closely related to the latitude.With the latitude increased,the stomata length and width decreased(R2=0.619,P0.05;R2=0.729,P0.01),while stomata density increased(R2=0.772,P0.05).