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在印度,橡胶选育种的主要问题之一是座果率非常低,其原因是在开花季节(1—2月)流行严重的白粉病,而人工授粉果由于6—7月份感染果腐病而损失严重。用人工方法改变开花期有助于避开白粉病的侵染,从而提高座果率。提早开花也能避免果腐病的侵染。一、材料和方法在本试验中,对无性系Gl1进行环状剥皮、叶面喷施不同的激素,以及环状剥皮加叶面喷施激素,以研究各种处理对改变开花期的效应。
In India, one of the major problems with rubber breeding is the very low fruit set rate due to the severe powdery mildew epidemic during the flowering season (January-February), which is due to the infection of fruit rot in June-July The loss is serious. Artificial methods to change the flowering stage will help to avoid powdery mildew infection, thereby increasing the rate of fruit set. Premature flowering can also prevent fruit rot infection. I. Materials and Methods In this experiment, the clones Gl1 were ring-peeled, different hormones were sprayed on the leaves, and the ring peeled and the leaves were sprayed with hormones to study the effects of various treatments on the flowering stage.