17种樟属树种木材比较解剖研究  

Comparative Anatomy of 17 Cinnamonum Wood

作　　者：孙瑾[1] 吴鸿[2] 孙同兴[1] 高振忠[1] 李凯夫[1] 李秉滔[1] 

机构地区：[1]华南农业大学林学院,广东广州510642 [2]华南农业大学生命科学学院,广东广州510642

出　　处：《林业科学研究》2002年第5期521-530,共10页Forest Research

基　　金：广东省自然科学基金资助项目 (2 0 0 0 0 6 0 8) ;华南农业大学校长基金资助项目

摘　　要：利用光学显微镜和扫描电子显微镜 ,对国产樟属 17种木材结构进行了观察。结果如下 :管孔排列为散孔材和半环孔材 ;较高的单管孔率 ;具有梯状穿孔和单穿孔两种类型 ,管间纹孔式主要为互列 ,少数种具对列。单列射线稀少、细而短 ,多列射线量多 ,形状差异较大 ;射线组织以异形Ⅲ和ⅡB型为主 ,射线 -导管间纹孔式主要为刻痕状。轴向薄壁组织以稀疏傍管状和星散状为主 ,部分种具环管束状、翼状 ,数量差异较大。樟属所有木材的射线或轴向薄壁组织中含油细胞或粘液细胞。木材的上述特征表明 ,樟属木材内部结构具有明显差异 ,并可作为种级分类依据。另外 ,根据木材结构的显著差异 ,建议光叶桂和细叶香桂按两个种处理。The wood anatomy of 17 native species belonging to Cinnamonum of Lauraceae was studied with both light microscope and scanning electron microscope.The main characters of the secondary xylem are as follows: (1) The woods are diffuse and semi ring porous with most solitary pores,a few multiple and cluster pores.(2) Vessel elements possess simple and scalariform perforation with predominantly alternate intervessel pits.(3) The woods possess mostly multiseriate ray and a few linear ray (4) Wood rays are heterogenous belonging to the Kribs' hetergeneous Ⅲ or Ⅱ B. Vessel ray pits are mainly of sculpture type (5) Wood axial parenchyma are mainly of diffuse and scanty paratracheal type, only a few are of vasicentric, aliform type (6) All woods of 17 species possess oil cells or mucilage cells in axial parenchyma cells or ray cells. According to the results mentioned above, we come to the conclusion that significant differences of wood structures in Cinnamonum may be employed as classification confirmation. Wood anatomy of Cinnamonum supports C.liouii and C.chingii as separate.

关 键 词：樟属树种 木材 比较解剖 木材结构 

分 类 号：S792.23[农业科学—林木遗传育种]