叉蕨科6种植物叶表皮特征的观察

Leaf Epidermis Characteristics of Six Species of Aspidiaceae

利用光学显微镜对叉蕨科(Aspidiaceae)4属6种植物的叶表皮特征进行观察。结果表明:它们的表皮细胞为不规则型,表皮细胞垂周壁呈浅波状或深波状;具6种气孔器类型,即极细胞型、聚合极细胞型、腋下细胞型、聚腋下细胞型、不等细胞型和无规则四细胞型,在气孔器组成上具多型现象,气孔为下生型;气孔指数相近;上、下表皮细胞中含有针晶或单晶;但6种叉蕨科植物在表皮细胞大小、表皮毛的有无、气孔大小和气孔密度、晶体的类型上存在一定的差异。

The epidermal structures of six species of Aspidiaceae were observed under light microscope. The results showed that their epidermal cells are irregular with their anticlinal walls undulate or sinuate. There are six types of stomatal apparatus, i.e. Polocytictype, Copolocytictype, Axillocytictype, Coaxillocytictype, Aisocytic-type and Anomotetracytietype. The components of stomatal apparatus are polymorphic, and all the stomatal apparatuses only occur in the lower epidermis, and the stomatal indexes are similar. Raphides and monocrystals are visible in the upper and lower epidermal cells. But the six species of Aspidiaceae are different in the size of epidermal cells, trichome production, the size of stomata and stomata density and crystal types.