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海金沙孢子壁结构和发育的研究
引用本文:戴锡玲,曹建国,朱瑞良,王全喜.海金沙孢子壁结构和发育的研究[J].西北植物学报,2009,29(7).
作者姓名:戴锡玲  曹建国  朱瑞良  王全喜
作者单位:1. 上海师范大学,生命与环境科学学院,上海,200234
2. 华东师范大学,生命科学学院,上海,200062
基金项目:上海师范大学理科科研项目 
摘    要:利用光镜、扫描电镜和透射电镜对海金沙科(Lygodiaceae)海金沙Lygodium japonicum (Thunb.) Sw.]孢壁的形成和发育进行了研究.结果表明:海金沙孢子壁由内壁、外壁和周壁3部分构成.外壁由2层构成,即薄的内层和厚的外层,其中外层是在四分体分离前通过孢粉素的逐层沉积并浓缩凝聚而形成的均质层,其表面具不明显的疣状突起.周壁由绒毡层残余物在外壁表面逐层沉积形成,可分为周壁内层、周壁中层和周壁外层3部分;周壁中层具辐射状排列的长条形成分,周壁外层形成瘤状纹饰的轮廓.本研究为孢粉学和蕨类植物系统演化分析提供基础资料.

关 键 词:海金沙  孢子发育  孢壁

Structure and Development of Sporoderm of Lygodium japonicum (Thunb.) Sw.(Lygodiaceae)
DAI Xi-ling,CAO Jian-guo,ZHU Rui-liang,WANG Quan-xi.Structure and Development of Sporoderm of Lygodium japonicum (Thunb.) Sw.(Lygodiaceae)[J].Acta Botanica Boreali-Occidentalia Sinica,2009,29(7).
Authors:DAI Xi-ling  CAO Jian-guo  ZHU Rui-liang  WANG Quan-xi
Institution:1 Life and Environment Science College;Shanghai Normal University;Shanghai 200234;China;2 College of Life Science;East China Normal University;Shanghai 200062;China
Abstract:The formation and development of sporoderm of the fern Lygodium japonicum(Thunb.) Sw.(Lygodiaceae) are studied using light microscope(LM),scanning electron microscope(SEM) and transmission electron microscope(TEM).The results are as follows:the sporoderm of the spore consists of endospore,exospore and perispore.The exospore can be identified as two layers,i.e.the relatively thin inner exospore and thick outer exospore.The outer exospore is formed by desposition and condensation of the sporopollenin in the t...
Keywords:Lygodium japonicum (Thunb  ) Sw    spore development  sporoderm
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