| 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。 |
| 关键词: 扫描电镜 管状分子 穿孔板 纹孔膜 |
| DOI： |
| 分类号:Q949 |
| Fund project: |
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| Study on tracheary elements of three genera in Athyriaceae |
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XU Hao1, WANG Ma-Li2*
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1.Department of Biological Science &2.Engineering, Shaanxi University of Technology, Hanzhong
723001, China;3.2.College of Life Sciences, Northwest University, Xi'an 710069, China
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| Abstract: |
| 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 Athyrium had close relation and the systematic position is relatively higher,and Cystopteris occupies a lower position. |
| Key words: scanning electron microscopy tracheary elements perforation plates pit membrane |
