| 大花杓兰根结构的扫描电镜研究 |
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| 引用本文： | 李柏年,高金城.大花杓兰根结构的扫描电镜研究[J].甘肃科学学报,1993,5(2):64-67. |
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| 作者姓名： | 李柏年 高金城 |
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| 作者单位： | 兰州大学电信系，兰州大学生物系 兰州 730001，兰州 730001 |
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| 摘 要： | 用扫描电镜观察大花杓兰(Cypripedium macranthon SW)根的解剖结构。大花构兰根为丛生根,根纤细,横断面呈圆形,两层表皮细胞呈正五、六边形,表皮和皮层间无根被。皮层由四～五层较大细胞组成,细胞间有三角形胞间隙。中柱内木质部与韧皮部放射状交替排列,木质部脊有五个,为多原型。
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| 关 键 词： | 扫描电镜 大花杓兰 根被 |
THE ROOT STRUCTURE OF CYPRIPEDIUM MACRANTHON SW OBSERVED BY THE SCANNING ELECTRON MICROSCOPY |
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| Li Bonian and Gao Jincheng.THE ROOT STRUCTURE OF CYPRIPEDIUM MACRANTHON SW OBSERVED BY THE SCANNING ELECTRON MICROSCOPY[J].Journal of Gansu Sciences,1993,5(2):64-67. |
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| Authors: | Li Bonian and Gao Jincheng |
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| Abstract: | The root anatomical structure of Cypripedium macranthon SW was observed by the scanning electron microscopy, the roots are very thin, grow thickly and their transverse sections are circular in shape, two layers of epidermis cell being regular pentagon and hexagon in shape. There are no velamen between epidermis and cortex. The cortex consists of 4-5 layers of larger cells. There are triangular intercellular spaces among cells. Xylem and phloem are arranged radiately and alternatively in stele. Xylem is polyarch and has 5 cristea. |
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| Keywords: | Scanning electron microscopy cypripedium macranthon SW velamen polyarch |
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