‘四季花’龙眼花序二次开花调控的初步研究

Preliminary Study on the Regulation of Secondary Blooming for the Same Inflorescence of 'Sijihua' Longan

初步探讨了‘四季花’龙眼同一花序二次开花的调控技术,结果表明:结果母枝叶片颜色基本变为深绿色时喷施多效唑(PP333,可有效地克服‘四季花’龙眼花序二次开花,使花序开花整齐度达100%;同时还显著地增加了结果母枝的粗度和花穗的总花量、雌花数、每穗果数、单果重。研究初步解决了‘四季花’龙眼同一花序上果实发育大小差异显著的难题。各处理中以300 mg/L PP333为效果最佳。

The regulation technologies of the secondary booming for the same inflorescence of ＇Sijihua＇ longan were preliminarily studied. The results showed that tile spraying treatment of PP333 ,when the leaves of bearing base branch turned to bottle green could overcome the secondary booming of inflorescence in ＇Sijihua＇ longan effectively and the uniformity of blooming inflorescence reach 100%. Meanwhile, the diameter of the bearing ＇base branch and total amount of flowers, the pistillate flowers, fruit number per inflorescence and weight per fruit were significantly increased. The problem of fruit development with significantly different size in the ,same inflorescence of ＇ Sijihua＇ longan was preliminarily solved. Among the treatments, the effect of 300 mg/L PP333 was best.