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

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

作　　者：王祥军[1,2] 曾仙珍 王亚杰 黄肖 张源源[1,2] 李维国 WANG Xiang-Jun;ZENG Xian-Zhen;WANG Ya-Jie;HUANG Xiao;ZHANG Yuan-Yuan;LI Wei-Guo(Rubber Research Institute,Chinese Academy of Tropical Agricultural Science,Danzhou 571737;State Centre for Rubber Breeding,Danzhou 571737;Institute of Tropical Agriculture and Forestry,Hainan University,Haikou 570228)

机构地区：[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

出　　处：《植物研究》2018年第6期876-885,共10页Bulletin of Botanical Research

基　　金：现代农业产业技术体系建设专项资金(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。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.

关 键 词：橡胶树 木材 超微结构 扫描电子显微镜 

分 类 号：S794.1[农业科学—林木遗传育种]