摘要
利用光学显微镜和扫描电子显微镜观察了中国青藓科Brachytheciaceae 10属和 17种孢子的形态特征。根据表面纹饰可分为 4个类型 :Ⅰ .颗粒状 (8种 ) ;Ⅱ .疣状 (4种 ) ;Ⅲ .瘤状 (4种 ) ;Ⅳ .皱波状 ,仅Brachythe ciumacuminatum (Hedw .)Auct.一种为皱波状纹饰 ,它的分类地位有待进一步探讨。前 3种类型有一定的相似性 ,在演化上也处于相近的水平 。
Spore morphology of 10 genera and 17 species of the moss family Brachytheciaceae was observed under light microscope (LM) and scanning electron microscope (SEM). The spores are globose or ellipsoid, atreme. The surface ornamentations can be divided into four types: Type I, granulate (8 species); Type II, verrucate (4 species); Type III, tuberculate (4 species); Type IV, rugulate. Among them, only 1 species belongs to the last one and its systematic position needs to be further studied. From the point view of palynology, the former three types are similar in morphology and evolution, thus it may be confirmed that the family Brachytheciaceae is a natural taxon.
出处
《贵州科学》
2001年第4期85-92,共8页
Guizhou Science
基金
国家自然科学基金资助项目 39970 0 6 2
中国科学院资环局重点项目 (K2 95 2 - 5 1- 0 2 2 )
