华北地区繁缕属Stellaria L.的花粉扫描电镜观察  

Observation on the pollen morphology in Stellaria L. in north china by SEM

作　　者：陈旭波[1,2] 孟世勇[1] 王菁兰[1] 刘全儒[1] 

机构地区：[1]北京师范大学生命科学学院,北京100875 [2]丽水学院化学与生命科学学院,浙江丽水323000

出　　处：《电子显微学报》2009年第5期437-441,共5页Journal of Chinese Electron Microscopy Society

摘　　要：利用扫描电子显微镜对华北地区繁缕属植物11种2变种进行了观察和研究。结果表明：华北繁缕属植物的花粉为球形,极少长球形;萌发孔类型为散孔型,萌发孔8~18个;孔膜突出或下陷,具疣状或颗粒状附属物;表面纹饰为刺状,夹杂有小穴分布。孔膜的特点、孔穴的密度、萌发孔的数目等在种内表现出了多变性。花粉形态在该属内表现出较高的一致性,但在类群的划分方面意义不大。The pollen morphology, of 11 species and 2 subtype of Stellaria （Caryophyllaceae） in North China were observed and studied under the scanning electron microscope （SEM）. It is indicated that the pollen shape is spheroidal, seldom prolate and the style of pollen grains is pantoporate. There are 8 - 18 apertura distributed on the surface of pollen evenly. Membrane of aperture is protrudent or hollow with either wart or granule. The surface of pollen is covered with spinules and foveolae. The characteristics of membrane, the density of foveolae and the number of aperture are variable within species. The morphology of pollen in Stellaria reflect high consistency, and insignificant in taxa classification.

关 键 词：SEM 繁缕属 花粉 华北地区 

分 类 号：Q944.42[生物学—植物学] Q949.745.8