首页 | 官方网站   微博 | 高级检索  
     

掌叶木的花器官发生及其系统学意义
引用本文:曹丽敏,夏念和,邓云飞.掌叶木的花器官发生及其系统学意义[J].植物分类学报,2006,44(4):393-400.
作者姓名:曹丽敏  夏念和  邓云飞
作者单位:1. 衡阳师范学院生命科学系,湖南衡阳,421008
2. 中国科学院华南植物园经济植物研究所,广州,510650
摘    要:利用扫描电子显微镜和光学显微镜观察了掌叶木的花器官发生过程。观察结果表明: 花序原基最先发生, 然后形成两个大小不一的花原基; 萼片原基的发生不同步, 螺旋状向心发生; 4-5枚花瓣原基以接近轮状方式近同时发生; 不存在花瓣-雄蕊复合原基; 7-8枚雄蕊原基为近同时发生, 其生长较花瓣原基快; 心皮原基最后发生, 3枚心皮原基为同时发生。花为单性花。在雌花中, 子房膨大而雄蕊退化。在雄花中, 雄蕊正常发育, 子房退化。讨论了掌叶木花器官发生和发育的系统学意义。

关 键 词:无患子科  掌叶木  花器官发生  系统学意义
收稿时间:08 26 2005 12:00AM
修稿时间:01 25 2006 12:00AM

Floral organogenesis of Handeliodendron bodinieri (Sapindaceae) and its systematic implications
CAO Li-Min,XIA Nian-He,DENG Yun-Fei.Floral organogenesis of Handeliodendron bodinieri (Sapindaceae) and its systematic implications[J].Acta Phytotaxonomica Sinica,2006,44(4):393-400.
Authors:CAO Li-Min  XIA Nian-He  DENG Yun-Fei
Affiliation:1 Institute of Economic Botany, South China Botanical Garden, the Chinese Academy of Sciences, Guangzhou 510650, China; 2 Graduate School of the Chinese Academy of Sciences, Beijing 100039, China
Abstract:Floral organogenesis and development of Handeliodendron bodinieri (Sapindaceae), a species endemic to China, were studied under scanning electron microscope and optical microscope. The results are as follows: the inflorescence primordium initiates at first, forming 2 unequal flower primordia. The sepal primordia initiate in spiral order and are not synchronous. Four to five petal primordia initiate in whorls simultaneously. The petal and stamen primordia initiate separately, and there is no petal-stamen complex. Seven to eight stamen primordia initiate nearly at the same time and grow more quickly than the petal primordia. At last, 3 carpel primordia appear simultaneously and close up gradually to form the ovary. The flowers of H. bodinieri are unisexual. In the female flower, the ovary bulges and the stamens degenerate, whereas the male flower, the stamens grow normally but the ovary degenerates. The systematic implications of floral organogenesis and development of H. bodinieri are discussed.
Keywords:Sapindaceae  Handeliodendron bodinieri  floral organogenesis  systematicimplication  
本文献已被 CNKI 维普 万方数据 等数据库收录!
点击此处可从《植物分类学报》浏览原始摘要信息
点击此处可从《植物分类学报》下载全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司    京ICP备09084417号-23

京公网安备 11010802026262号