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[摘要]
目的探讨3种香茶菜植物茎叶表面细微结构差异。方法取香茶菜、大萼香茶菜、显脉香茶菜3种新鲜香茶菜的茎叶进行扫描电镜观察。结果3种香茶菜有共同特征,气孔椭圆形、腺鳞四细胞组成等,但每种香茶菜茎叶都有各自独特的细微构造,尤其在表皮细胞形状、非腺毛和气孔的形态及着生位置等方面有着显著的差异。结论3种香茶菜茎叶表面细微结构的明显差异,为鉴别香茶菜属植物提供了新的依据。
[Key word]
[Abstract]
Object To study the micro morphological characteristics of the leaf and stem epidermis of three species in Rabdosia (Bl ) Hassk Methods The leaf and stem epidermis of Rabdosia amethystoides (Benth ) Hara, R.macrocalyx (Dann) Hara and R.nervosa (Hemsl ) C Y Wu et H W Li were observed by scanning electron microscope (SEM).Results Some characteristics are same among three species, such as elliptical stoma and glandular scale which has four cells, but some characteristics are di fferent, such as the shape of epidermal cell, the distribution of nonglandular hair, the shape of stoma.Conclusion The leaf and stem epidermal characteristics are obviously different among the three species, it provides the new reference to discriminate the plants of Rabdosia (Bl ) Hassk
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[基金项目]
浙江师范大学科研基金资助项目(2001037);浙江省自然科学基金项目(302028)