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作 者 ：姜笑梅 周崟 张立非

期 刊 ：林业科学 1992年 28卷 2期 页码：138-145

关键词：附物纹孔；附物；豆科植物木材；导管；电镜；

Keywords:Vestured pit, Vestures, Leguminosae woods, Vessel, Electron microscopy,

摘 要 ：本文对我国豆科植物的3亚科、19属、26种木材导管的附物纹孔进行了扫描电镜观察,除3属4种木材的导管无附物纹孔外,其余均有。附物纹孔的有无及其形态、分布特征是区分豆科各属、种的一个重要标志。此外,14种木材切片用5%次氯酸钠溶液处理后,大部分附物减小,以至消失。又对其中一种木材的超薄切片进行透射电镜研究表明,附物和次生壁的电子密度不同,说明两者的化学成分不同。还对附物的形成、生理功能、与瘤状物的关系进行了讨论。

Abstract:Vestured pits on the vessel wall in 26 species belonging to 19 genera and 3 sub-families Chinese leguminosae woods were investigated by SEM. Among them vestured pits in vessel, except 4 species, have been observed, Present or absent, shape and distribution of vestures are some valuable features for the identificatin of genera and species of Leguminosae woods. When wood sections (14 species) were treated with 5% sodium hypochorite, vestures decreased mostly or could not be seen. When the ultrathin wood section of one species was studied using TEM, it indicated that the electron. density is different between the vestures and the second wall, namely, different chemcal composition was shown between them. In addition, the formation, function of vestures and its relations with warts were discussed too.

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