阳桃次生木质部导管分子及侵填体的研究

Study on the vessel elements and tylosis of secondary xylem in Averrhoa carambola

关键词:  阳桃  导管分子  侵填体  形态结构

Key words:  Averrhoa carambola  vessel elements  tylosis  conformation and structure

摘要:

运用细胞图象分析系统和显微照相的方法对阳桃次生木质部导管分子进行了观察研究。次生木质部导管分子类型有两端具尾导管、一端具尾导管和无尾导管。导管分子穿孔板存在着2种类型:两端均为一个单穿孔板; 一端为一个单穿孔板,另一端为具两个单穿孔的复穿孔板。48%的导管分子具有囊状侵填体; 管间纹孔式为互列纹孔式。

Abstract:

The vessel elements of secondary xylem in Averrhoa carambola are observed by bio-microscope image analysis system and micrography. Three types of vessel elements were found,a tail on each side,a tail on one of the side and no tail. Two types of perforation plates were present as follows: both ends of the vessel element are simple perforation plates; one end simple perforation,the other multiple perforation,in which there are two simple perforations. The 48 percent of vessel elements have vesicular tylosis. The intervascular pitting is alternate pitting.