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植物研究 ›› 2001, Vol. 21 ›› Issue (2): 227-230.

• 论文 • 上一篇    下一篇

中国金粉蕨属孢子形态的研究

于晶, 王全喜1, 包文美2   

  1. 1. 上海师范大学生物系上海 200234;
    2. 哈尔滨师范大学生物系哈尔滨 150080
  • 收稿日期:2000-06-29 出版日期:2001-06-15 发布日期:2016-06-14
  • 作者简介:于晶(1972-), 女, 博士研究生, 植物生态学。
  • 基金资助:
    国家自然科学基金资助项目(C39470067)

STUDIES ON THE SPORE MORPHOLOGY OF ONYCHIUM FROM CHINA

YU Jing, WANG Quan xi1, BAO Wen mei2   

  1. 1. Department of Biology, Shanghai Normal University, Shanghai 200234;
    2. Department of Biology, Harbin Normal University, Harbin 150080
  • Received:2000-06-29 Online:2001-06-15 Published:2016-06-14

摘要: 利用扫描电子显微镜对我国产金粉蕨属8种2变种蕨类植物的孢子进行了观察。结果表明,该属孢子形态较为一致,三裂缝,辐射对称,极面观为钝三角形或三角圆形,赤道面观为椭圆形、超半圆形或扇形。周壁较薄,外壁突起形成表面纹饰的基本轮廓,具赤道环、近极脊和远极脊等结构。种间差异主要表现在远极面的纹饰形态上。从孢子形态上看,金粉蕨属与中国蕨科其它属差异较大,而与凤尾蕨属相似,建议将本属放在凤尾蕨科。

关键词: 金粉蕨属, 孢子形态, 中国

Abstract: Spore morphology of 8 species 2 varieties of genus Onychium from China was examined by SEM. Each spore was described detailed. The taxonomic status of Onychium was discussed. The spore morphology of the genus is uniform, trilete, radiosymmetric, polar view obtuse triangular or tri-rounded, equatorial view elliptical, super semiorbicular or fan-shaped. Perispore thin, exospore swells to form contour of spore ornamentation. The spore has a few unique structures such as equatorial flange, proximal ridge and distal ridge. Difference between species mainly appears as different distal surface ornamentation. At the point of spore morphology, Onychium is far distinguished from other genera in Sinopteridaceae. However, it is similar to genus Pteris of family Pteridaceae. We suggest separate Onychium from Sinopteridaceae to Pteridaceae.

Key words: Onychium, Spore morphology, China