首页 | 本刊简介 | 编委会 | 投稿征稿 | 期刊订阅 | 下载中心 | English
 
   
  论文快速检索

请输入关键词

 

 

   
  信息公告
海外撷英栏目开通,欢迎投稿

热带亚热带植物学报网络开通

访问总次数
14384771
今日访问
6322
当前在线
0人
 
引用本文:
【打印本页】   【HTML】   【下载PDF全文】   查看/发表评论  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 3418次   下载 1834 本文二维码信息
码上扫一扫!
分享到: 微信 更多
肿足蕨的配子体发育研究
郭治友1, 刘红梅2
1.黔南民族师范学院生命科学系;2.城市人居环境科学与技术重点实验室, 北京大学深圳研究生院
摘要:  对肿足蕨(Hypodematium crenatum (Forssk.) Kuhn)的孢子进行人工培养,在显微镜下观察其孢子萌发和配子体发育。结果表明,肿足蕨的孢子深褐色,二面体型,单裂缝,具周壁,有密集的褶皱状纹饰。孢子赤道面观为肾形,极面观为椭圆形。孢子萌发类型为书带蕨型(Vittaria-type),原叶体发育为叉蕨型(Aspidium-type)。成熟原叶体为对称心形,原叶体上毛状体极其发达,有两种不同类型的毛状体,分别为乳头状和长针状。假根分叉,常见膨大。成熟的原叶体为雌雄同株,精子器由3个细胞构成,同一原叶体上同时存在处于不同发育时期的精子器,颈卵器长且较为弯曲。肿足蕨的配子体发育表现出较为进化的特点,同时也形成了对石灰岩生境的高度适应机制。
关键词:  肿足蕨  孢子萌发  配子体发育  分类学意义
DOI:10.3969/j.issn.1005-3395.2010.3.2466
分类号:
基金项目:贵州省科技厅自然科学基金项目(黔科合J字[2008]2102)
Studies on the Gametophyte Development of Hypodematium crenatum (Forssk.) Kuhn
GUO Zhi-you1, LIU Hong-mei2
1.Department of Life Science, Qiannan Normal College for Nationalities;2.The Key Laboratory for Environmental and Urban Sciences, Shenzhen Graduate School, Peking University
Abstract:   The spores of Hypodematium crenatum (Forssk.) Kuhn were artificially cultured, and the spore germination and gametophyte development were observed under the microscope. Spores were bean-shaped in equatorial view and elliptical in polar view, monolete, perispore with folds, dark brown. The spore germination belonged to the Vittaria-type, while the gametophyte development is Aspidium-type. The mature prothallium was cordate and bearing two kinds of trichomes (papillary and long needle-like). The rhizoids were bifurcated and enlarged. The mature prothallium is bisexual. The antheridia consist of 3 cells and varied antheridia at different developmental stages occurred on one prothallium. The archegonia are long and always curved to growing point. The characteristics of spore germination and gametophyte development of H. crenatum was relatively advanced and showing a highly adaptation to the limestone environment.
Key words:  Hypodematium crenatum (Forssk.) Kuhn  Spore germination  Gametophyte development  Taxonomic significance

Copyright 2007 版权所有 中国科学院华南植物园《热带亚热带植物学报》编辑部
地址: 广州市天河区兴科路723号 中国科学院华南植物园 《热带亚热带植物学报》编辑部 邮编:510650 电话: 86 (0)20-3725 2514  传真:86 (0)20-3725 2642 E-mail: jtsb@scib.ac.cn
本系统由北京勤云科技发展有限公司设计
京ICP备09084417号-2