| 盖裂木属两种植物花粉形态观察 |
| |
| 引用本文： | 陈东钦,徐凤霞. 盖裂木属两种植物花粉形态观察[J]. 广西植物, 2008, 28(3): 317-319 |
| |
| 作者姓名： | 陈东钦 徐凤霞 |
| |
| 作者单位： | 中国科学院,华南植物园,广州,510650;广东省数字化植物园重点 实验室，广州,510650;中国科学院研究生院,北京,100049;中国科学院,华南植物园,广州,510650;广东省数字化植物园重点 实验室，广州,510650 |
| |
| 基金项目： | 国家自然科学基金 , 广东省自然科学基金 , 教育部留学回国人员科研启动基金 |
| |
| 摘 要： | 利用光学显微镜、扫描电镜和透射电镜观察了盖裂木属两种Talauma gloriensis和T.mexicana的花粉形态。花粉粒具远极单萌发沟,椭圆球形,外壁较光滑或略粗糙且具小穴状雕纹。在透射电镜下,花粉外壁可分为覆盖层、柱状层和基层,外壁-2明显,且厚度不均匀。在远极面萌发沟区域,外壁逐渐减薄,最后覆盖层和柱状层消失,仅残留基层。T.gloriensis的柱状层内部空间较小,多由颗粒组成,而T.mexicana柱状层中有发育较好的小柱,与覆盖层和基层连接。
|
| 关 键 词： | 盖裂木属 Talauma gloriensis T.mexicana 花粉形态 |
| 文章编号： | 1000-3142(2008)03-0317-03 |
| 修稿时间： | 2007-04-05 |
Observation of pollen morphology of two species from Talauma |
| |
| CHEN Dong-Qin,XU Feng-Xia. Observation of pollen morphology of two species from Talauma[J]. Guihaia, 2008, 28(3): 317-319 |
| |
| Authors: | CHEN Dong-Qin XU Feng-Xia |
| |
| Affiliation: | 1.South China Botanical Garden,The Chinese Academy of Sciences,Guangzhou 510650,China; 2.Key Lab of Digital Botanical Garden of Guangdong Province,Guangzhou 510650,China; 3.Graduate School of the Chinese Academy of Sciences,Beijing 100049,China |
| |
| Abstract: | The pollen grains of Talauma gloriensis and T.mexicana are large with the longest axis more than 45 μm,elliptica in polar view,boat-shaped in equatorial view.Exine sculpture is foveolate or slightly coarse.The exine of these two species can be distinguished by tectum,columella and foot layer.The colpus membrane consists of a thin foot-layer and intine,while the sexine elements(tectum and columella)are reduced gradually.Endexine is distinct and varies in thickness.Granules are frequently observed in columella with small intraexinous spaces in T.gloriensis,while individual well-developed columella,connecting directly the tectum and foot layer could be found in T.mexicana. |
| |
| Keywords: | Talauma T.gloriensis T.mexicana pollen morphology |
| 本文献已被 维普 万方数据 等数据库收录！ |
| 点击此处可从《广西植物》浏览原始摘要信息 |
|
点击此处可从《广西植物》下载全文 |
|
