五种楠属植物叶片油细胞和黏液细胞的比较

摘要

Using the method of organization transparent and paraffin section, the indices including shape, diameter and distri-bution of density and specific distribution in mesophyll of medium oil cell and mucilage cell of the leave of five species of Phoebe Nees [P.faberi (Hemsl.) Chun, P.chekiangensis C B Shang, P.bournei (Hemsl.) Yang , P.zhennan S.Lee et F N Wei, P.sheareri (Hemsl.) Gamble] were comparatively studied The results are as follows, oil cells are round in shape with their diameter ranks from 20 to 35 μm; most mucilage cells are elliptical in shape with their diameter ranks from 30 to 75μm.The difference in density of oil cells and mucilage cells between some species is significant.Observed from the cross sec-tion of leaves, oil cells and mucilage cells of the 5 species are all distributed in palisade tissue and near the upper epidermis%利用组织透明法和石蜡切片法比较研究了楠属(Phoebe Nees)5种植物竹叶楠[Phoebe faberi (Hemsl.) Chun]﹑浙江楠(P.chekiangensis C B Shang)﹑闽楠[P.bournei (Hemsl.) Yang]﹑楠木(P.zhennan S.Lee et F N Wei)和紫楠[P.sheareri (Hemsl.) Gamble]叶片中油细胞与黏液细胞的形状﹑直径﹑分布密度以及在叶肉中的具体分布.结果表明,5种楠属植物叶片中油细胞均为圆形,直径20~35μm;黏液细胞多为椭圆形,长轴直径30~75μm. 2种细胞的分布密度在某些种类之间差异显著. 从叶片横切面观察,5种植物的油细胞和黏液细胞均分布于栅栏组织,且靠近上表皮.