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云锦杜鹃的开花动态与繁育系统研究
边才苗;金则新
1.台州学院生命科学与医药化工学院;2.台州学院生命科学与医药化工学院 浙江台州317000;3.浙江台州317000
摘要:
对3个云锦杜鹃种群的开花动态和传粉方式等野外定位观测结果显示:花芽在花朵开放后形成雏 形,经过8~9月的生长后成形,次年4月复苏,形成含6~12朵花的总状伞形花序,5月初开花,花期接近25 d。花生命周期为5~8d,其中种群G的周期最短,平均为5.8d,主要原因是光照时间长,湿度相对较低,花形 态较小。开花后第二天到第三天,花药开裂,散出粘连成串的花粉,悬挂在花柱的中上部,同时柱头进入可授 期;第五天到第六天,花瓣与花托分开并前移到花柱,使花柱倒垂,花粉串能粘附到柱头上。根据人工授粉试 验和花粉落置观察的结果,云锦杜鹃的繁育系统为混合交配型,自然条件下为花后自花授粉,主要借...
关键词:  月云锦杜鹃    繁育系统    花粉—胚珠比    自花传粉
DOI:
分类号:
Fund project:浙江省教委科研计划项目(20030770)资助
Abstract:
Key words:  
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