| 摘要: |
| 该文选取海南省国产花叶藓科(Calymperaceae)5属8种(鞘刺网藓、卷叶网藓、匍网藓、黄匍网藓、兜叶花叶藓、梯网花叶藓、八齿藓、刺肋白睫藓)植物,采用石蜡切片及扫描电镜技术,从形态解剖学角度,通过对茎叶的形态解剖结构及表面微形态观察,比较各藓类植物茎叶的形态特征、内部解剖结构、中肋及表面纹饰间的差异,以区分8种花叶藓科植物。结果表明:8种植物的茎叶解剖结构,包括茎的横切面的形状、有无中轴细胞的分化、细胞层数,叶片中肋横切面中央主细胞的数量、位置、背腹面细胞表面光滑粗糙程度以及叶细胞中绿色细胞的形状均具明显区别。8种花叶藓科植物茎横切面椭圆形至圆形; 除八齿藓及白睫藓中肋不具有中央主细胞外,其他种中肋中央主细胞数量均不同,中央主细胞基本位于中肋中央; 梯网花叶藓背面细胞壁具有较多短纵纹; 只有八齿藓茎横切结构中具中轴细胞的分化。 |
| 关键词: 花叶藓科, 茎, 叶, 形态解剖, 分类 |
| DOI：10.11931/guihaia.gxzw201801019 |
| 分类号:Q944.1 |
| 文章编号:1000-3142(2019)01-0040-13 |
| Fund project:国家自然科学基金(31570207); 黑龙江省教育厅基本业务专项项目(135209262)[Supported by the National Natural Science Foundation of China(31570207); Basic Program of Department of Education in Heilongjiang Province(135209262)]。 |
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| Morphological and anatomical structural observation of stems and leaves of eight species of Calymperaceae in Hainan |
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SHA Wei, LIU Lili, MA Tianyi, ZHANG Yanfu, ZHANG Meijuan*
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College of Life Sciences, Agriculture and Forestry, Qiqihar University, Qiqihar 161006, Heilongjiang, China
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| Abstract: |
| We observed the morphological and anatomical structures and micromorphology of stems and leaves of eight species in Calymperaceae, which are belonging to five different genera in total. The eight species collected from Hainan Pro-vince were Syrrhopodon armatua, S. involutus, Mitthyridium fasciculatum, M. flavum, Calymperes moluccense, C. afzelii, Octoblphaerum albidum and Leucophane albescens, China. The morphological characteristics and micromorphological structures studied in this research in cluded internal anatomical structures of stems and leaves, different comparisons in costa and cell surface, using paraffin section and scanning electron microscopy techniques, and morphological observation. The results showed the anatomical structures of stems and leaves of the eight species were obviously different, including stem cross-sectional shape, axial cell differentiation, cell layers, the number and location of the central main cells in costa and the smooth and rough of the dorsal and ventral cells and the shape of chlorophyllose cell. Stem cross sections were oval to circular in the eight species and the number of central main cells was different, and the main cells located on central of the costa, except for Octoblphaerum albidum and Leucophane albescens, the dorsal cell wall was short wrinkle in Calymperes afzelii. Only the cross-sectional structure of Octoblphaerum albidum was with axial cell differentiation. |
| Key words: Calymperaceae, stem, leaf, morphological anatomy, taxonomy |
