Integrated effects of soil application of PP333 combining with adjusted cultivation techniques on off-season flowering and fruiting of Sijimi mango (Mangifera indica L.).
Fang ZhongBin, Pan JieChun, Tao ShaoQin, Zheng Xin
Author Affiliation: College of Agriculture, Guangxi University, Nanning 530005, China.
Journal of Guangxi Agricultural and Biological Science 27 : 138-141
Abstract : Four-year-old mango (M. indica cv. Sijimi) trees supplied with fertilizer and pruned in the spring were treated with PP333 [paclobutrazol] at 1.0, 2.0, 3.0 g or 4. 0 g per tree on 11 June. Trees treated with PP333 at 3.0 g or 4. 0 g per tree showed higher percentage of flower formation. Trees treated with PP333 at 3.0 g per tree recorded the highest percentage of flowering (87.0%). When PP333 was applied at more than 3.0 g per tree, the leaves of the trees became shorter and narrower, whereas the number of leaves increased. PP333 had no significant effect on the length of shoots. The anthesis of a single panicle lasted 9-10 days. The percentage of hermaphrodite flowers was higher at the early stage of anthesis than at the late stage of anthesis. Trees treated with PP333 at 2.0 g per tree showed the highest percentage of hermaphrodite flowers, percentage of flower formation, fruit set rate, yield, and number of leaves.