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植物研究 ›› 2006, Vol. 26 ›› Issue (6): 667-671.doi: 10.7525/j.issn.1673-5102.2006.06.007

• 论文 • 上一篇    下一篇

四种补血草属植物叶片泌盐结构的扫描电镜观察

周玲玲;刘 萍;陆嘉惠   

  1. (石河子大学生命科学学院,石河子 832003)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2006-11-20 发布日期:2006-11-20
  • 通讯作者: 周玲玲
  • 基金资助:
     

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

ZHOU Ling-Ling;LIU Ping;LU Jia-Hui   

  1. (College of Bio-science,Shihezi University,Shihezi 832003)
  • Received:1900-01-01 Revised:1900-01-01 Online:2006-11-20 Published:2006-11-20
  • Contact: ZHOU Ling-Ling
  • Supported by:
     

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 gmelinii (Willd.) 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。

关键词: 补血草, 泌盐结构, 扫描电镜

Abstract: 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.

Key words: Limonium, salt-secreting structure, scanning electron microscopy

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