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林业科学 ›› 1995, Vol. 31 ›› Issue (2): 155-159.

• 论文及研究报告 • 上一篇    下一篇

国产阔叶树材导管中侵填体和树胶的研究*

姜笑梅,张立非,周崟   

  1. 中国林业科学研究院木材工业研究所 北京 100091
  • 收稿日期:1994-04-09 出版日期:1995-03-25 发布日期:1995-03-25
  • 基金资助:
    国家自然科学基金资助项目

A STUDY ON TYLOSES AND GUMS IN THE VESSELS OF CHINESE HARDWOOD

Xiaomei Jiang,Lifei Zhang,Yin Zhou   

  1. Institute of Wood Industry CAF Beijing 100091
  • Received:1994-04-09 Online:1995-03-25 Published:1995-03-25

摘要:

扫描电镜观察我国102种阔叶树材导管, 其中49种有侵填体存在, 12种有树胶存在。侵填体形态有4种类型, 即泡沫状、梯状、坍塌状和圆球状。树胶分布有3种形式,即堵塞整个导管、胶层附在导管内壁、圆球状胶滴沉积在纹孔上。导管-射线间纹孔口长和宽大于3 μm和2 μm的树种具有侵填体, 小于3 μm和2 μm的具有树胶。对刺槐(Robinia pseudoacacia)超薄切片的观察表明, 侵填体壁具有分层的初生壁和胞间层, 并保留单纹孔。光镜观察3种阔叶树材导管中侵填体和树胶在生长轮的分布, 近髓心处含量最丰富, 向树皮方向有减少的趋势。

关键词: 侵填体, 树胶, 导管, 导管-薄壁细胞间纹孔口, 阔叶树材

Abstract:

The occurrence and morphology of tyloses and gums in vessels of 102 Chinese hardwood were investigated using SEM. Tyloses were present in 49 species and gums in 12 species. Morphological types of tyloses are: foamed, ladder-, collasped-shaped, globular. Morphological types of gums are: vessels occlusied, thin layer, small droplet. The mean values of length and width pit aperture of vessel to parenchyma pit were greater than 3 and 2μm, respectively, in species having tyloses and were less than these values in species having gums. The obeservation of ultrathin section of Robinia pseudoacacia wood by TEM showed: the tyloses walls has a compound middle lamella and primary walls with simple pits. There are more tyloses and gums in vessele of pith of 3 species. The content of tyloses and gums decreased in vessels of each growth ring from pith to bark.

Key words: Tyloses, Gums, Vessels, Pit aperture of vessel to parenchyma pit, Hardwood