蹄盖蕨科三属植物管状分子的研究  

Study on tracheary elements of three genera in Athyriaceae

作　　者：徐皓[1] 王玛丽[2] 

机构地区：[1]陕西理工学院生物科学与工程学院,陕西汉中723001 [2]西北大学生命科学学院,西安710069

出　　处：《广西植物》2009年第3期300-303,359,共5页Guihaia

基　　金：陕西省教育厅项目(07JK211);陕西省自然科学基金(2006C119)~~

摘　　要：扫描电镜观察假冷蕨属4种、冷蕨属3种、蹄盖蕨属3种植物根状茎中的管状分子,结果显示:这些管状分子端壁和侧壁的形态、结构相同且侧壁具有穿孔板(多穿孔板)。根据穿孔板的类型和穿孔的纹孔膜残留程度,我们发现假冷蕨属与蹄盖蕨属亲缘关系较近,进化地位较高,冷蕨属的进化地位相对原始。Tracheary elements of rhizomes of 4 species in Pseudocystopteris,3 species in Cystopteris and 3 species in Athyrium were examined on scanning electron microscopy（SEM）. The results indicated that the end walls had the same morphological characteristics and structure as the lateral walls, which contained perforation plates （multi-perforation plates）. According to the type of perforation plates and degree of pit membrane remnants, the results showed that Pseudocystopteris and Athyriurn had close relation and the systematic position is relatively higher,and Cystopteris occupies a lower position.

关 键 词：扫描电镜 管状分子 穿孔板 纹孔膜 

分 类 号：Q949[生物学—植物学]