黄三七( 毛茛科) 茎次生木质部导管穿孔板的研究*

摘要/Abstract

摘要：

利用扫描电子显微镜对东亚特有植物黄三七( Souliea vaginata (Maxim. ) Franch. ) 茎的次生木质部
离析材料进行了观察, 结果表明, 黄三七茎次生木质部中的导管分子端壁上具网状穿孔板( 麻黄式穿孔
板) 、梯状穿孔板、网状- 梯状混合穿孔板、网状- 梯状- 单穿孔混合型穿孔板、梯状- 单穿孔混合型穿
孔板及单穿孔板, 同时也观察到了端壁多穿孔板和侧壁穿孔板, 并对不同类型穿孔板中纹孔膜的残留也进
行了观察。其中, 网状穿孔板、各种过渡类型的穿孔板均为毛茛科植物中首次报道。根据观察结果, 对导
管分子穿孔板的演化及黄三七属植物的系统位置进行了分析。

关键词: 黄三七, 毛茛科, 次生木质部, 导管分子, 穿孔板

Abstract:

Souliea vaginata (Maxim. ) Franch. is the only member of Souliea Franch. belonging to Ranunculaceae and
endemic to East Asia. The vessel elements and their perforation plates in the secondary xylem of stem of the species were
observed under SEM in order to provide new anatomical evidence for a better understanding of the taxonomy and systematic
position of the genus. The results showed that the reticulate ( ephedroid) , scalariform, reticulate- scalariform, reticulatescalariform-
simple, and scalariform- simple perforation plates of the vessel elements were found for the first time in Ranunculaceae.
The mult-i perforation plate of the end-wall and the latera-l wall perforation plates have been observed and the pit
membrane remnants in the different perforation plates were also described. The evolution of the perforation plates of the
vessel elements and the systematic position of genus Souliea were discussed in the paper based on the present observation.

Key words: Souliea vaginata, Ranunculaceae, Secondary xylem, Vessel element, Perforation plate

中图分类号:

Q 944

宋春慧, 任毅**, 田先华, 张小卉. 黄三七( 毛茛科) 茎次生木质部导管穿孔板的研究*[J]. Plant Diversity, 2006, 28(2): 157-161.

SONG Chun-Hui, LIN Yi-**, TIAN Xian-Hua, ZHANG Xiao-Hui. An Investigation of Vessel Perforation Plates in the Secondary Xylem of Stem of Souliea vaginata ( Ranunculaceae)[J]. Plant Diversity, 2006, 28(2): 157-161.

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