| 非洲狼尾草胚珠(着重胚珠附器)发育的特点 |
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| 引用本文： | 刘林,叶秀麟,梁承邺.非洲狼尾草胚珠(着重胚珠附器)发育的特点[J].武汉植物学研究,2000,18(5):359-362. |
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| 作者姓名： | 刘林 叶秀麟 梁承邺 |
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| 作者单位： | 1. 山东临沂师范学院生物系,276005
2. 中国科学院华南植物研究所,广州,510650 |
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| 基金项目： | 国家自然科学基金资助课题!( 39570 0 50 ) |
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| 摘 要： | 用光学显微镜对非洲狼尾草胚珠发育做了进一步观察。结果表明有如下几个特点：（１）珠孔区域的珠心细胞发生特化，膨大１伸长并进入珠孔，形成胚珠附器。（２）珠心表皮平周分裂产生周缘珠心组织。（３）珠孔由内珠被和腹侧外珠被构成。
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| 关 键 词： | 非洲狼尾草 胚珠 胚珠附器 周缘珠心组织 珠孔 |
| 收稿时间： | 1999-8-9 |
| 修稿时间： | 2000-5-24 |
SOME DEVELOPMENTAL FEATURES OF OVULE IN PENNISETUM SQUAMULATUM,WITH EMPHASIS ON EMBELLUM |
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| Liu Lin,Ye Xiulin,Liang Chengye.SOME DEVELOPMENTAL FEATURES OF OVULE IN PENNISETUM SQUAMULATUM,WITH EMPHASIS ON EMBELLUM[J].Journal of Wuhan Botanical Research,2000,18(5):359-362. |
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| Authors: | Liu Lin Ye Xiulin Liang Chengye |
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| Institution: | South China Institute of Botany,The Chinese Academy of Sciences Guangzhou 510650 |
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| Abstract: | Microstructural study was made on ovule development in Pennisetum squamulatum,and several prominent developmental and structural features were observed as follows:(1) Some nucellar cells become specialized by enlarging,elongating,and protruding into the micropylar canal,forming embellum.(2) There occurs a highly developed prietal nucellar tissue,which is derived from nucellar epidermis.(3) The micropyle is formed with inner integuments and partial outer integument. |
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| Keywords: | Pennisetum squamulatum Ovule Embellum Prietal nucellar tissue Micropyle |
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