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| 暹罗苏铁茎的解剖学研究 | |
| 引用本文： | 韦丽君,黄玉源,陈金湘,伍映辉,黄爱花.暹罗苏铁茎的解剖学研究[J].西北植物学报,2011,31(11):2210-2215. |
| 作者姓名： | 韦丽君 黄玉源 陈金湘 伍映辉 黄爱花 |
| 作者单位： | 1. 湖南农业大学农学院,长沙410128; 广西壮族自治区亚热带作物研究所,南宁530001 2. 仲恺农业工程学院生命科学学院,广州510225; 广西大学农学院,南宁530005 3. 湖南农业大学农学院,长沙,410128 4. 海口市农业科学研究所,海口,570011 5. 广西农业科学院玉米研究所,广西明阳,530007 |
| 基金项目： | 国家自然科学基金(30260007) |
| 摘 要： | 利用冰冻切片法在光学显微镜下观察暹罗苏铁茎的解剖特征。结果表明,暹罗苏铁茎由周皮、皮层、皮层维管束、中柱和髓组成,皮层和髓发达。皮层维管束可分为周韧型和外韧型两种,以周韧型为主。中柱的次生结构为同心环的次生维管组织构成,随着茎的不断成熟,环数逐渐增加;每个同心环均含有次生木质部、维管形成层、次生韧皮部的结构;环与环之间有次生的薄壁组织相间隔。皮层、中柱维管束均由木质部、形成层和韧皮部组成,木质部面积均大于韧皮部。苏铁植物茎在次生结构方面的主要特点是有皮层维管束和同心环结构的中柱维管束。 |
| 关 键 词： | 暹罗苏铁 茎 结构特征 生态适应性 |
Study on Anatomical Structure of the Stem of Cycas siamensis |
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| WEI Li-jun,HUANG Yu-yuan,CHEN Jin-xiang,WU Ying-hui,HUANG Ai-hua.Study on Anatomical Structure of the Stem of Cycas siamensis[J].Acta Botanica Boreali-Occidentalia Sinica,2011,31(11):2210-2215. | |
| Authors: | WEI Li-jun HUANG Yu-yuan CHEN Jin-xiang WU Ying-hui HUANG Ai-hua |
| Institution: | WEI Li-jun1,2,HUANG Yu-yuan3,4,CHEN Jin-xiang1,WU Ying-hui5,HUANG Ai-hua6(1 College of Agriculture,Hunan Agricultural University,Changsha 410128,China,2 Guangxi Zhuang Autonomous Region Institute of Subtropical Crop,Nanning 530001,3 College of Life Sciences,Zhongkai University of Agriculture and Engineering,Guangzhou 510225,4 Agricultural College,Guangxi University,Nanning 530005,5 Haikou Institute of Agricultural Science,Haikou 570311,6 Maize Institute,Guangxi Academy of Agricultura... |
| Abstract: | We observed anatomy characteristics of stems of Cycas siamensis by freeze-sectioning under the optical microscope.The results indicated that the stem of C.siamensis was composed of periderm,cortex,cortex vascular bundle,stele and pith.Cortex and pith were well developed.The types of cortex vascular bundle could be two kinds:amphicribral bundles and collateral bundles,the former was major.The secondary structure of stele was composed of secondary vascular tissue with some concentric rings.As the stem matured... |
| Keywords: | Cycas siamensis stem structure characteristic ecology adaption |
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