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植物研究 ›› 2016, Vol. 36 ›› Issue (5): 692-696.doi: 10.7525/j.issn.1673-5102.2016.05.009

• 研究报告 • 上一篇    下一篇

空气凤梨叶片蜡质成分及叶表结构研究

郑桂灵, 张伟, 李鹏   

  1. 青岛农业大学资源与环境学院, 青岛 266109
  • 收稿日期:2016-05-04 出版日期:2016-09-15 发布日期:2016-09-27
  • 通讯作者: 李鹏,E-mail:pengleep@163.com E-mail:pengleep@163.com
  • 作者简介:郑桂灵(1980-),女,博士,主要从事植物学研究。
  • 基金资助:
    青岛市科技计划项目(14-2-4-46-jch);国家自然科学基金项目(41475132,41571472);青岛农业大学高层次人才基金项目(1113351,1115002)

Leaf Wax Components and Surface Structure of Tillandsia Species

ZHENG Gui-Ling, ZHANG Wei, LI Peng   

  1. College of Resource and Environment, Qingdao Agricultural University, Qingdao 266109
  • Received:2016-05-04 Online:2016-09-15 Published:2016-09-27
  • Supported by:
    Qingdao Science and Technology Program(14-2-4-46-jch);National Natural Science Foundation of China(41475132,41571472);Scientific Foundation of Qingdao Agricultural University(1113351,1115002)

摘要: 空气凤梨是一类依靠叶片吸收水分和养分的特殊植物类群。为进一步探讨其叶片功能,以五种空气凤梨为材料,通过扫描电镜(SEM)和气相色谱-质谱联用法(GC-MS)分析了其叶表结构和蜡质成分。结果表明空气凤梨叶表面覆盖有白色、蜡质、葵花状的鳞片,由翼状细胞、环状细胞和碟状细胞三种细胞构成。叶片蜡质成分中以低极性的烃、醇、酮、酯等物质为主,可起到有效减少水分散失的作用。对五种空气凤梨叶片蜡质成分总含量分析表明,小精灵空气凤梨 >贝克利空气凤梨 >维路提拉空气凤梨 >女王头空气凤梨 >电卷烫空气凤梨。而相关性分析则表明,蜡质成分总含量与空气凤梨鳞片总面积呈显著的正相关,暗示空气凤梨叶片蜡质成分主要存在于叶表的鳞片上。

关键词: 空气植物, 叶表鳞片, 气相色谱-质谱联用, 蜡质成分

Abstract: Tillandsia is a kind of special plant which absorbs water and nutrients directly from the air through leaves. In order to investigate the function of the leave, five Tillandsia species were chose to analyze their leave surface structures with scanning electron microscope(SEM) and wax components with gas chromatography-mass spectrometry technology(GC-MS). The white, waxy, sunflower-shaped trichomes covered the leaf surface in all species. The foliar trichomes were made up of disc cells, ring cells and wing cells. The main wax components contained low-polarity constituents, including hydrocarbons, alcohols, ketones and esters, which may reduce the water loss effectively. In addition, the total contents of wax components among five Tillandsia species were different with the order of Tillandsia ionantha >Tillandsia brachycaulos >Tillandsia velutina >Tillandsia medusa >Tillandsia streptophylla. By the correlation analysis, the total contents of wax components were positively correlated with the total leave area of foliar trichomes, indicating that those wax components were distributed mainly on the foliar trichomes.

Key words: air plant, foliar trichomes, GC-MS, wax components

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