PROBLEM TO BE SOLVED: To provide a plant growth regulator.SOLUTION: The plant growth regulator comprises a compound represented by formula 1, or a salt or ester thereof as an active ingredient. (R1 is H, a halogen atom, a hydroxy group, an alkyl group, or an alkoxy group R2 is H, a halogen atom, a hydroxy group, an alkyl group, or an alkoxy group and R3 is a hydroxy group, an alkoxy group, or an amino group.)SELECTED DRAWING: NoneCOPYRIGHT: (C)2018,JPO&INPIT【課題】植物成長調整剤の提供。【解決手段】式1で表される化合物もしくはその塩またはエステル体を有効成分とする、植物成長調整剤。(R1はH、ハロゲン原子、水酸基、アルキル基、又はアルコキシ基;R2はH、ハロゲン原子、水酸基、アルキル基又はアルコキシ基;R3はヒドロキシ基、アルコキシ基、又はアミノ基)【選択図】なし
