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| 重回缩修剪对龙眼叶片内源激素含量的影响 | |
| 引用本文： | 黄永敬,卢美英,何全光.重回缩修剪对龙眼叶片内源激素含量的影响[J].果树学报,2006,23(2):237-241. |
| 作者姓名： | 黄永敬 卢美英 何全光 |
| 作者单位： | 1. 广东省农业科学院果树研究所,广州,510640 2. 广西大学农学院,南宁,530005 3. 广西农业科学院园艺研究所,南宁,530007 |
| 基金项目： | 国家科技攻关项目 , 广西自然科学基金 |
| 摘 要： | 对交叉封行的大乌圆龙眼树(8年生)进行重回缩修剪,重剪后用167mg/LPP333溶液调节树体生长,冬季喷施450mg/L乙烯利控梢促花,研究其对龙眼叶片内源激素的影响。结果表明:实施重回缩修剪后,大乌圆龙眼叶片的乙烯、IAA含量下降,GA3、ZT含量增加,而对ABA含量影响不大;重回缩修剪后施PP333,叶片乙烯、IAA和ABA含量增加,GA3、ZT含量下降。在龙眼花芽生理分化期,重回缩修剪树叶片内源激素处于较高GA3、较低ZT水平,据此认为这是导致龙眼重回缩修剪树难以花芽分化的主要原因之一。 |
| 关 键 词： | 龙眼 重回缩修剪 内源激素 花芽分化 |
| 文章编号： | 1009-9980（2006）02-237-05 |
| 收稿时间： | 2005-09-12 |
| 修稿时间： | 2005-11-30 |
Effects of heavy cutting-back on the content of endogenous hormones of longan leaves |
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| HUANG Yong-jing,LU Mei-ying,HE Quan-guang.Effects of heavy cutting-back on the content of endogenous hormones of longan leaves[J].Journal of Fruit Science,2006,23(2):237-241. | |
| Authors: | HUANG Yong-jing LU Mei-ying HE Quan-guang |
| Institution: | 1. Fruit Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou , Guangdong 510640 China ;2.A griculture College Guangxi University,Nanning, Guangxi 530005 China; 3.Horticulture Research Institute,Guangxi Academy of Agricultural Sciences Nanning , Guangxi 530007 China |
| Abstract: | In order to study the effects of heavy cutting-back on leaves'endogenous hormones,8-year-old trees of Dawuyuan longan(Dimocarpus longana Lour.), which were intersected each other grown in the orchard, were treated with heavy cutting-back. After heavy cutting-back,167 mg/L paclobutrazol (PP333) was applied for adjusting the tree growth,450 mg/L ethephon was used to control the new shoot growth and to promote the flower-bud differentiation in winter.The results showed that the ethylene and IAA contents in the leaves of Dawuyuan were reduced after implementing heavy cutting-back,with an increase of GA3 and ZT contents; while little effect on ABA content. Applying PP333 after heavy cutting-back,the contents of ethylene,IAA and ABA were increased,while contents of GA3 and ZT were reduced. In the critical period of bud physiological differentiation of longan,leaves of heavy cutting-back trees was in a high GA3 and low ZT level,so it is considered that was one of the main reasons of no flower-bud differentiation about heavy cutting-back trees. |
| Keywords: | Longan Heavy cutting-back Endogenous hormones Flower-bud differentiation |
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