Effect of cold damage on flowering of longan and effects of removing dead terminal panicle on flower bud differentiation of axilla buds of mango and litchi.
Jiang JianChu, Pei TieXiong, Wang JingJing, Zhao Ming, Pan JieChun, Xue JinJun
Author Affiliation: College of Agriculture, Guangxi University, Nanning 530005, China.
Guangxi Zhiwu / Guihaia 30 : 220-223, 232
Abstract : In order to find out the effect of cold damage on the flowering of longan and the result of method taking to reduce damage of cold on the flowering of mango and litchi, the flowering situation of different longan varieties was investigated after a long period of extreme low temperature in spring of 2008 and the effects of removing dead terminal panicles of different varieties of litchi and mango on the flower bud differentiation of their axilla buds were studied. The results showed that number of panicles from axilla buds of Litchi (Litchi chinensis Soon) cv. Heye, Qinzhouhongli, Nuomici and Lixiahong were markedly increased by removing the dead terminal panicles resulting from cold, with an average number of panicle per treated tree 139, 62.5, 28 and 29 respectively, which was 119, 22.5, 25 and 26 higher than those of CK, respectively. There was not any difference in number of panicles between treated trees and trees of CK of Feizixiao, Sanyuehong, Guiwei and Heli. The treated mango (Mangifera indica L.) cv. Tainong 1, Guifei, Guire 82, Hongxiangya, and Jinsui produced 92, 18, 131, 20.5 and 18 panicles per individual in average respectively, obviously higher than those of CK, which produced 25, 4, 60, 10 and 0 panicles respectively. There was not any difference in panicle number between treated trees and trees of ck of Kaite, Guire120, Jier, Zihua and Jinhuang. Longan (Dimocarpus longan Lour.) cv. Guiming, Chuliang, Shixia, Xiaoguangyan, Dawuyuan and Daguangyan showed the best result in flowering after cold temperature with an average panicle number per tree of 88, 67, 52.7, 52, 51 and 50 respectively, followed by Guixiang, Wulongling, Dongbi, Lidongben and Zaobailu which produced 39, 26, 25, 23.5, 21.5 panicles per tree respectively.