安徽产大戟属植物叶表皮微形态

Studies on Leaf Epidermis Micromorphology of uphorbia from Anhui Province

利用光镜和扫描电镜对安徽7种大戟属(Euphorbia)植物叶表皮进行了观察。发现该属7种植物叶表皮细胞为不规则形或多边形,垂周壁一般为平直、浅波状、深波状;气孔器通常为无规则型,有的种类叶表皮具单细胞毛或多细胞毛,表皮毛在电镜下具瘤状突起的纹饰。在扫描电镜下,角质层纹饰多具鳞片或颗粒等特征,种间有细微差别。结果表明该7种植物叶表皮微形态有明显差别,这些表皮特征有助于识别一些在外部形态较相近的种类。

The leaf epidermis structures of seven species in the genus Euphorbia from Anhui province in China, have been examined with LM and SEM. The shapes of leaf epidermal cells are usually irregular or polygonal and the anticlinal walls are straight, arched, sinuolate, sinuous or sinuate. The stomata apparatus is anomocytie type and some species have simple or multicellular hairs which have neoplasitic process under SEM. And the cuticular membrane of leaf epidermis is scaly or granular under SEM. The result shows significant micrumorphological differences of leaf epidermis of the seven species and it is taxonomically helpful for the identification of some species with similar leaf morphology.