EFFECT OF THE APPLICATION OF GROWTH REGULATORS ON Peltophorum dubium

Abstract

The objective of this study was to verify changes in the vegetative growth of Peltophorum dubium before flowering induced by the application of plant growth regulators. The experimental design was randomized blocks with three replications of four plants/plot. The variables height, stem diameter, chlorophyll content, and peroxidase activity were evaluated. Statistical analysis was performed using SAS. Plant size reduction (73%) was induced by the plant inhibitor paclobutrazol. Plant height growth was stimulated by GA3 (18%). Ethephon caused death of the apical buds.