摘要
东北蒲公英（Taraxacum ohwianum Kitam.）花序重复开放3~4 d后,就永久性闭合。其授粉与否对花的寿命影响不大,但授粉过程会加速花朵闭合,减少花朵展示时间。温度和授粉均影响花朵开闭,东北蒲公英在20℃左右保持开放状态,低于15℃花序开始闭合。小花开放数量以及天气情况都会影响昆虫种类和数量,从而进一步影响花朵闭合进程;授粉过程可大大缩短花朵展示时间,平均减少4 h/d左右。传粉昆虫数量越多、温度越高,花朵闭合进程就越快。
The inflorescence of Taraxacum ohwianum Kitam. opened and closed repeatedly for 3 to 4 days, then permanently closed. Pollination or unpollination has little impact on floral longevity; but pollination accelerated flower closure thus reduced the show time. Temperature and pollination can affect flower opening and closing. The capitula opened at about 20 ℃ and closed at 15 ℃. Florets quantity and weather condition would affect the insect species and quantity, so further affect the close process. Pollination process can greatly reduce the show time（about 4 h/d）. The more pollinators and the higher temperature is, the faster the closure process of flowers.
出处
《湖北农业科学》
2016年第4期931-934,共4页
Hubei Agricultural Sciences
基金
国家科技支撑计划项目(2006BAC18B04-1-1)
