| 气生凤梨叶片结构研究 |
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| 引用本文： | 王思维,郑桂灵,付英,王丹,李鹏.气生凤梨叶片结构研究[J].植物研究,2010,30(2):140-145. |
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| 作者姓名： | 王思维 郑桂灵 付英 王丹 李鹏 |
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| 作者单位： | 1.西南科技大学生命科学与工程学院，绵阳 621010；;2.核废物与环境安全国防重点学科实验室，绵阳 621010 |
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| 基金项目： | 西南科技大学国防重点学科实验室重点培育项目(07XJGZB17) |
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| 摘 要： | 我们以地生凤梨(Guzmnania‘Denise’)作为对照,利用扫描电镜技术、石蜡切片技术对3种气生凤梨(Til-landsia stricta‘Hard leaf’、T.stricta‘Cotton candy’与T.filifolia)的叶片表面和内部结构进行了研究。结果表明所有凤梨叶片表面均分布着葵花状的鳞片,鳞片由碟状细胞、环状细胞和翼状细胞3类细胞构成,最内部的碟状细胞通过柄状细胞与叶片内部的叶肉细胞相连。气生凤梨叶片表面鳞片白色、蜡质、密度很大,但气孔很少或不可见,暗示鳞片除吸收水分和养分外,还可能具有减少光呼吸、排水及反射阳光等功能。另外,不同的气生凤梨之间叶片表面鳞片的形态、大小和密度也不同,反映了它们对其不同起源地及现生存环境的适应。
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| 关 键 词： | 凤梨 鳞片 扫描电镜 生态适应 |
Foliar Structure of Several Species of Epiphytic Tillandsia(Bromeliaceae) |
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| WANG Si-Wei, ZHENG Gui-Ling, FU Ying WANG Dan, LI Peng.Foliar Structure of Several Species of Epiphytic Tillandsia(Bromeliaceae)[J].Bulletin of Botanical Research,2010,30(2):140-145. |
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| Authors: | WANG Si-Wei ZHENG Gui-Ling FU Ying WANG Dan LI Peng |
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| Institution: | 1.School of Life Science and Engineering/a>;Southwest University of Science and Technology/a>;Mianyang 621010/a>;2.Defence Key Discipline laboratory of Nuclear Waste and Environmental Security/a>;Mianyang 621010 |
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| Abstract: | We analyzed and compared external and internal structure of the leaves of three epiphytic Tillandsia species(Tillandsia stricta 'Hard leaf',T.stricta 'Cotton candy' and T.filifolia) and one terrestrial species of Bromeliaceae,Guzmania 'Denise',by scanning electron microscope(SEM) and paraffin section.The results showed that the sunflower-shaped trichomes covered the leaf surface in all species studied.The foliar trichomes were made up of disc cells,ring cells and wing cells,and the central disc cells were c... |
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| Keywords: | ecological adaptation foliar trichomes scanning electron microscope Tillandsia |
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