桂花单性结实现象的初步探讨

Primary Studies on Parthenocarpy of Osmanthus fragrans

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.