东南园艺2025，Vol.13Issue(6)：582-588,7.DOI:10.20023/j.cnki.2095-5774.2025.06.005
环割处理对西克刺桐生理特性及开花的影响
Effects of girdling treatment on the physiological characteristics and flowering of Erythrina sykesii
摘要
Abstract
[Objective]This study aimed to investigate the effects of different girdling methods and intensities on nutrient accumulation in the trunk bark,distribution of endogenous hormones,and flowering performance of Erythrina sykesii.[Method]The experiment set up treatments of closed-loop girdling(1,2,and 3 loops)and spiral girdling,with no girdling as the control.Determine the content of soluble sugar,soluble protein,zeatin riboside(ZRs),gibberellin 3(GA3),indoleacetic acid(IAA)and abscisic acid(ABA)in the trunk bark of Erythrina sykesii.Statistics of the flowering rate and the morphological index of inflorescence,and analysis of the effects of girdling treatment on the physiological characteristics and flow of Erythrina sykesii.[Result]Girdling the trunk bark of Erythrina sykesii can effectively cut off phloem transport,block the transport of photosynthates from the upper part of the cut to the base and promoting the accumulation of soluble sugars and soluble proteins at the upper region of the cut.This also leads to an increase in cortical the thickness of the epidermis at the upper region of the cut.Among the treatments,the closed-loop double girdling treatment resulted in the maximum cortical thickness,showing a 107.22%increase compared to the control.Additionally,the contents of zeatin riboside(ZRs),gibberellin 3(GA3),indoleacetic acid(IAA)and abscisic acid(ABA)were elevated,forming a distinct gradient of hormone concentration.The highest flowering rate was obtained by treating with the closed-loop double girdling treatment,which was 138.55%higher than that of the control.It also can effectively promote the elongation of inflorescence and increase the proportion of multiple spike flowers.The effects of girdling exhibited a dose-dependent pattern,with the closed-loop double girdling showing the most significant outcomes.In contrast,the closed-loop triple girdling treatment process partial effects appears to decline.The effect of spiral girdling treatment is weaker than that of closed-loop treatments because the conducting tissue is not completely interrupted.[Conclusion]The closed-loop double girdling treatment of Erythrina sykesii is the moderate way and intensities of girdling.It blocks the flow of substances in the phloem,promotes the accumulation of photosynthetic products and endogenous hormones,regulates the balance of nutrition and reproductive growth of Erythrina sykesii,and is conducive to its flowering.关键词
西克刺桐/环割/树干皮层/花期调控/花芽分化/内源激素Key words
Erythrina sykesii/girdling/trunk bark/flowering time regulation/flower bud differentiation/endogenous hormones分类
农业科技引用本文复制引用
郑焙华..环割处理对西克刺桐生理特性及开花的影响[J].东南园艺,2025,13(6):582-588,7.基金项目
泉州市科技计划项目(2025QZNK024) （2025QZNK024）
泉州市林业科技项目(20221HH450) （20221HH450）
