桂花单性结实现象的初步探讨  

Primary Studies on Parthenocarpy of Osmanthus fragrans

作　　者：杨琴军[1] 黄燕文[2] 李和平[2] 

机构地区：[1]华中农业大学园艺林学学院,湖北武汉430070 [2]华中农业大学生命科技学院,湖北武汉430070

出　　处：《江西农业大学学报》2004年第1期119-122,共4页Acta Agriculturae Universitatis Jiangxiensis

摘　　要：对桂花单性结实现象进行了研究。结果表明:桂花某丹桂品种无籽果实的形成是他动型单性结实的结果;具单性结实性丹桂的花粉生活力较低,且不能形成功能性花粉管,但雌性器官具有育性;在果实发育早期子房内的4个胚珠同时膨大,可能是引起单性结实的胚胎学因子之一。Primary studies on parthenocarpy of Osmanthus fragrans indicated that the development of the seedless fruit of Dan Gui was the result of stimulated parthenocarpy. This cultivar had lower pollen viability and didn't produce functional pollen tube. But female organs were fertile. The expansion of all four ovules in the early stages of parthenocarpic fruit development may be one of the embryological factors causing parthenocarpy.

关 键 词：桂花 单性结实 花粉生活力 花粉管 雌性器官 果实发育 胚珠 

分 类 号：S685.130.1[农业科学—观赏园艺]