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| 叉孢苏铁茎的解剖学研究 | |
| 引用本文： | 韦丽君,黄玉源,徐 峰,伍映辉,黄爱花.叉孢苏铁茎的解剖学研究[J].广西植物,2009,29(1):20-27. |
| 作者姓名： | 韦丽君 黄玉源 徐 峰 伍映辉 黄爱花 |
| 作者单位： | 1. 广西亚热带作物研究所,南宁,530001 2. 仲恺农业工程学院,生命科学学院,广州,510225 3. 广西大学林学院,南宁,530005 4. 海口市农业科学研究所,海口,570011 5. 广西玉米研究所,南宁,530007 |
| 摘 要： | 对叉孢苏铁茎的解剖结构进行了仔细的研究,结果表明:叉孢苏铁茎具有发达的皮层,皮层及髓中具有黏液道,有外韧型和周韧型的维管束分布在皮层中,但主要以外韧型为主,在同一切面上能看到横、纵、斜3种不同走向的维管束,所有皮层维官束韧皮部组成成份比较单一。维管组织区由多个生长环组成,每个生长环都具有木质部、维管形成层和韧皮部组成,各生长环韧皮部所占比例均大于木质部,在具4生长环的下部茎的维管组织中,环与环之间间隔2～10层不等的薄壁细胞。从纵向变化上看,从上至下,维管组织区的厚度及生长环数逐渐递增,在同一组织中,含晶及含单宁物质的异细胞呈从无到有,从少到多的分布趋势。 |
| 关 键 词： | 叉孢苏铁 茎 解剖结构 |
Study on anatomy of the stem of Cycas segmentifida |
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| WEI Li-Jun,HUANG Yu-Yuan,XU Feng,WU Ying-Hui,HUANG Ai-Hua.Study on anatomy of the stem of Cycas segmentifida[J].Guihaia,2009,29(1):20-27. | |
| Authors: | WEI Li-Jun HUANG Yu-Yuan XU Feng WU Ying-Hui HUANG Ai-Hua |
| Institution: | WEI Li-Jun1,HUANG Yu-Yuan2,XU Feng3,WU Ying-Hui4,HUANG Ai-Hua5(1.Biotechnology Center,Guangxi Institute of Subtropical Crops,Nanning 530001,China,2.College of Life Sciences,Zhongkai University of Agriculture and Engineering,Guangzhou 510225,3.Forestry College,Guangxi University,Nanning 530005,4.Institue of Agricultural Science of Haikou,Haikou 530005,5.Guangxi Maize Research Institute,Nanning 530227,China) |
| Abstract: | The anatomical structure of stem of Cycas segmentifida were studied.The results show that stem of C.segmentifida possesses of abundant cortex and there are mucilage canals distribute in cortex and pith.Collateral vascular bundle and amphicribral vascular bundle also distribute in cortex,but the most one is collateral vascular bundle.Three kinds of different trends vascular bundle-horizontal,vertical and slanting can be seen in the identical section.Phloem component of all vascular bundle in cortex are singl... |
| Keywords: | Cycas segmentifida stem anatomical structure |
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