摘要
在扫描电镜下对药用植物苦丁茶 (Ilex kudingcha C.J.Tseng)与 4个近缘种的叶表皮微形态进行了观察。结果显示这些材料的叶表皮仅远轴面有气孔器存在 ,气孔圆形至椭圆形 ,气孔外拱盖表面多平滑 ,拱盖内缘近平滑 ,浅波状或波状 ,外缘角质膜在气孔周围呈环形包着气孔。但各种间叶表皮的微形态特征具有较为明显的差异 ,有一定的分类鉴定意义。本研究结果支持将五棱苦丁茶 (I.pentagona S.K.Chen,Y.X.Feng et C.F.L iang)从苦丁茶中独立出来建立一新种 ,但因苦丁茶具有 2种类型气孔器外缘角质膜排列 ,而不支持对扣树 (I.kaushue S.Y.Hu)
Scanning electron microscope (SEM) was used to examine foliar epidermal features of a medical plant, Ilex kudingcha C. J. Tseng, and its relative 4 species. In those species, stomatal apparatus are ovate or suborbicular or elliptic and only present on the abaxial surface. Ornamentation of outer stomatal ledge (or rim) is nearly smooth and inner margin of them is nearly smooth, sinuolate or sinuate. Cuticular membrane is insular but annular around stomata. As a result of observation, Characters of foliar surface under SEM are very useful evidence in indentifying and classifying the certain taxa of Ilex . In the present paper, it is not supported that I. kudingcha should be referred to I. kaushue S. Y. Hu but support that I. pentagona S. K. Chen, Y. X. Feng et C. F. Liang is regarded as a new speices.
出处
《广西植物》
CAS
CSCD
北大核心
2000年第3期229-232,共4页
Guihaia
基金
广西自然科学基金资助项目
关键词
苦丁茶
叶表皮
气孔器
近缘种
扫描电镜
Ilex kudingcha C. J. Tseng
leaf epidermis
stomatal apparatus
