作 者 ：Su Pu
期 刊 ：植物分类学报 1987年 5期
Keywords:Dioscorea,
Abstract:
This paper deals with pollen morphology of 33 species belonging to 5 sections of
Dioscorea in China. They were examined under both LM and SEM.
The pollen grains of Sect. Stenophora are monocolpate with the size of 17-25.5×26.8-
39.1μm, the exine is reticulate, striate, parforate-reticulate or cerebro-reticulate, while those of the
other sections are bicolpate, reticulate or cerebro- reticulate with the size of 19.2-26.7×13.9-
23.1μm.
Based on palynological data Sect. Stenophora may be considered primitive and Sect.
Enantiophyllum the most advanced in Dioscorea.