四种补血草属植物叶片泌盐结构的扫描电镜观察  

A SEM observation of the salt-secreting structure of leaves in four species of Limonium

作　　者：周玲玲[1] 刘萍[1] 陆嘉惠[1] 

机构地区：[1]石河子大学生命科学学院,石河子832003

出　　处：《植物研究》2006年第6期667-671,共5页Bulletin of Botanical Research

基　　金：国家重大基础研究前期研究专项基金资助项目(2002CCA02800);石河子大学自然科学与技术创新项目资助

摘　　要：利用扫描电镜技术,对4种补血草属植物大叶补血草(Limonium gm elinii(W illd.)Kuntze)、耳叶补血草(Limoniu otolepis(Schrenk)Kuntze)、繁枝补血草(Limonium myrianthum(Schrenk)Kuntze)和簇枝补血草(Limonium auream)的叶表面进行了研究,以探讨植物微形态结构与生态环境的关系。结果表明,这4种植物的上下表皮都分布有盐腺,且上表皮的盐腺密度大于下表皮,盐腺的基本结构相同,多由20个细胞构成,其中4个分泌细胞顶端的角质层中央有一小孔,植物体靠盐腺的泌盐孔泌盐。但4种植物在盐腺的密度、盐腺的大小、盐腺与周围表皮细胞的位置等方面存在差异。植物在对盐碱生境的长期适应过程中,促使其强烈地分化出泌盐结构,因而,具有明显的生态适应性。The surface of leaves was studied by SEM in the following four Limonium species ： Limonium gmelinii （ Willd. ） Kuntze, Limonium otolepis （ Schrenk ） Kuntze, Limonium myrianthum （ Schrenk ） Kuntze and Limonium auream, Inorder to research the relationships between the micro-structure of plants and environment. The result shows that each of these four plants has a distributing of salt gland in their upper and lower epidermis of leaf, Most of them are consisted of 20 cells, and 4 out of 20 respectively has a small hole on the center of cuticle. The salt release of plant relies on the salt-secreting holes of salt gland. However, each of the four species has a difference in the density, the size and the position of the salt gland. During the long-time adaptation to the special habitat of saline-alkali, and this enables a plant to differentiate strongly into salt-secreting structure, Therefore, it is obvious significance in ecological adaptation.

关 键 词：补血草 泌盐结构 扫描电镜 

分 类 号：Q945.11[生物学—植物学]