堇菜属植物花粉及叶表皮超微形态多样性的研究

Studies of Ultrastructural Diversity on Pollen and Leaf Eoidermis of the Genus Viola L.

对华北地区分布的 2 5种堇菜属植物花粉和 2 6种堇菜属植物叶表皮进行了形态观察。结果表明 :堇菜属植物花粉外壁光滑 ,无纹饰 ;三色堇具有 5个萌发沟 ,其他物种具有 3个萌发沟 ;叶表皮具有复杂的多样性特征 ,对该属分类提供有价值的证据 ;

The pollen morphology of 25 species and the leaf epidermis morphology of 26 species in Genus Viola in North China were observed. The results showed that pollen wall of the Genus is smooth. There are 3 or 4 germinal grooves on the pollen of the Genus except V. tricolor (5 grooves). The leaf epidermis morphology of the Genus is diversified, so these characters is of considerable taxonomic significance. It is suggested that the section Pinnatae was established and that the species V. trichosepala (Becker) Juz. is deleted as a ssp. of V. tenuicornis Becker.