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植物研究 ›› 2018, Vol. 38 ›› Issue (6): 876-885.doi: 10.7525/j.issn.1673-5102.2018.06.011

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橡胶树(Hevea brasiliensis Muell.Arg.)幼茎木材的超微结构观察

王祥军1,2, 曾仙珍3, 王亚杰3, 黄肖1,2, 张源源1,2, 李维国1,2   

  1. 1. 中国热带农业科学院橡胶研究所, 儋州 571737;
    2. 国家橡胶树育种中心, 儋州 571737;
    3. 海南大学热带农林学院, 海口 570228
  • 收稿日期:2018-07-02 出版日期:2018-11-15 发布日期:2018-11-01
  • 通讯作者: 李维国 E-mail:leewg23@163.com
  • 作者简介:王祥军(1984-),男,副研究员,主要从事橡胶树生长发育研究。
  • 基金资助:
    现代农业产业技术体系建设专项资金(CARS-34-GW1)

Wood Ultrastructure Observation of Rubber Tree (Hevea brasiliensis Muell.Arg.) Young Stem

WANG Xiang-Jun1,2, ZENG Xian-Zhen3, WANG Ya-Jie3, HUANG Xiao1,2, ZHANG Yuan-Yuan1,2, LI Wei-Guo1,2   

  1. 1. Rubber Research Institute, Chinese Academy of Tropical Agricultural Science, Danzhou 571737;
    2. State Centre for Rubber Breeding, Danzhou 571737;
    3. Institute of Tropical Agriculture and Forestry, Hainan University, Haikou 570228
  • Received:2018-07-02 Online:2018-11-15 Published:2018-11-01
  • Supported by:
    Earmarked Fund for Modern Agro-Industry Technology Research System(CARS-34-GW1)

摘要: 橡胶树是中国重要的热带经济作物,橡胶种植的副产物橡胶木是我国木材供应的重要来源。我们以不同发育阶段的橡胶树幼茎木材为材料,借助扫描电子显微镜技术,对木质部细胞的超微结构进行了观察。结果表明,在橡胶树幼茎木材中,导管和木纤维细胞壁随着木质部发育成熟会发生明显的次生加厚,加厚方式主要为螺纹加厚;木质部各类型细胞均存在大量纹孔,纹孔排列方式主要有散生、网状、梯状和单串状等类型;在木质部发育过程中,木射线和部分薄壁细胞中会逐渐积累大量淀粉粒;木质部细胞内壁及其填充物表面存在不同类型的附着物。研究结果将为橡胶木材材性及其形成机制的研究提供一定理论参考。

关键词: 橡胶树, 木材, 超微结构, 扫描电子显微镜

Abstract: Rubber tree(Hevea brasiliensis Muell. Arg.) is an important economic crop in China's tropical regions. Rubber wood, a by-product of rubber cultivation, is an important source of timber supply in China. Using scanning electron microscopy, we studied the ultrastructure of xylem cells of rubber tree young stems which develop in different stages. The results showed that in the wood of rubber tree young stem, the cell wall of the vessel and wood fiber were thickened obviously with the development and maturation of the xylem. Spiral thickening was the main thickening method. There were a large number of pits in the cell wall of xylem cells. The main modes of the arrangement of the pits are scattered, reticular, ladder-shaped, and pearl-like. During the development of xylem, starch granules will gradually accumulate in the ray and some parenchyma cells. There are different types of attachments on the surface of xylem cell wall. These results will provide a theoretical reference for the studies of rubber wood property and its formation mechanism.

Key words: Hevea brasiliensis Muell.Arg., wood, ultrastructure, scanning electron microscopy

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