摘要
利用扫描电镜对假瘤蕨属2系、5亚系22种植物的孢子纹饰特征进行了研究。结果显示:该属孢子为单裂缝、两侧对称,极面观为椭圆形,赤道面观为肾形。表面纹饰具有6种类型:光滑、粗糙、颗粒、棒状、疣状和瘤状纹饰以及它们之间的过渡类型。研究表明,孢子纹饰特征可以用来区分该属中的近缘种,但不能用以界定假瘤蕨属的属下分类——系和亚系。
The spore ornamentations of 22 species,representing 2 series and 5 subseries of the genus Phymatopteris,are examined by means of scanning electron microscopy （SEM）.The spores are monolete,bilaterosymmetric,ellipsoidal in polar view,and kidney-shaped in equatorial view.Six main types：psilate,scabrate,granulate,baculate,verrucate,tuberculate and some transitional types are presented in spore surface ornamentation.The evidence from spore ornamentations can be used to differentiate the affined species in this genus.However,it can not be served as a criterion for distinguishing the subgeneric classification：series and subseries in Phymatopteris.
出处
《西北植物学报》
CAS
CSCD
北大核心
2010年第3期524-529,共6页
Acta Botanica Boreali-Occidentalia Sinica
基金
国家自然科学基金(30770164)
关键词
水龙骨科
假瘤蕨属
孢子纹饰
polypodiaceae
Phymatopteris
spore ornamentations
