云南产8种卷柏科植物的孢子形态  

Spore Morphology of Eight Species of Selaginellaceae from Yunnan

作　　者：刘家熙[1] 孙晓红[1] 靳颖[1] 吕琳[1] 余晓星[1] 张宪春[2] 

机构地区：[1]首都师范大学生物系,北京100037 [2]中国科学院植物研究所,北京100093

出　　处：《云南植物研究》2003年第3期303-312,共10页Acta Botanica Yunnanica

基　　金：国家自然科学基金资助项目 (No .3980 0 0 11)

摘　　要：利用光学显微镜和扫描电子显微镜首次观察了云南产 8种卷柏科 (Selaginellaceae)植物 :钝叶卷柏SelaginellaamblyphyllaAlston ;双沟卷柏S bisulcataSpring ;勃固卷柏S kurziiBaker;疏穗卷柏S laxistrobilisK .H .Shing ;微齿钝叶卷柏S ornata (Hook .etGrev .)Spring ;耳叶卷柏S pseudopaleiferaHand . Mazz .;高雄卷柏S repanda (Desv .exPoir)Spring ;泰国卷柏S siamensisHieron .的大、小孢子形态。研究结果表明卷柏科植物大、小孢子为辐射对称、三裂缝 ,其表面纹饰复杂 ,8种卷柏植物的大、小孢子在孢壁纹饰上存在着较明显差异。为卷柏科形态学和系统演化的研究提供了有价值的基础资料。The spores of eight species of Selaginellaceae,Selaginella amblyphylla Alston,S.bisulcata Spring,S.kurzii Baker,S.laxistrobilis K.H.Shing,S.ornata (Hook.et Grev.) Spring,S.pseudopaleifera Hand.-Mazz.,S.repanda (Desv.ex Poir) Spring and S.siamensis Hieron.from Yunnan of China were observed by means of LM and SEM.The morphological characteristics of both the microspores and the megaspores are described in detail. The treatment emphasizes scanning electron microscope (SEM) studies for the structural details (the shape,size, trilete and surface ornamentation) in the micrographs, and refers to light microscope studies only on spore size (at least 20 spores are observed to get the average).The conclusion is that the spore morphology of these eight species is different from each other.The author considers that to identify these species of Selaginella by micro-morphological character is reasonable.With scanning species in the genus of Selaginlla,it seems to contribute to the materials for systematic and palynology of Selaginellaceae.

关 键 词：卷柏科 孢子形态 扫描电子显微镜 云南 

分 类 号：Q944[生物学—植物学]