PROBLEM TO BE SOLVED: To provide a method for imparting stress resistance to plants promoting growth of the plants even in such an environment as to cause various stresses on the plants.SOLUTION: The method for imparting stress resistance to plants comprises applying a plant-stress resistance-imparting agent composed of a compound represented by general formula 1 to the plants in a cultivation condition having a plant stress ratio of 111-200%: wherein R1 is a 10-22C hydrocarbon group, R2 is a hydrogen atom, a hydroxyl group or a 1-24C hydrocarbon group, and R3 is a hydrogen atom or a 1-24C hydrocarbon group.COPYRIGHT: (C)2009,JPO&INPIT【課題】植物に対する様々なストレスが生じる環境においても生育を促進するようなストレス耐性を植物に付与する方法を提供する。【解決手段】下記一般式(1)で表される化合物からなる植物ストレス耐性付与剤を、植物ストレス率が111~200%の栽培条件にある植物に施用する、植物ストレス耐性付与方法。(式中、R1は炭素数10~22の炭化水素基、R2は水素原子、水酸基又は炭素数1~24の炭化水素基、R3は水素原子又は炭素数1~24の炭化水素基を表す。)【選択図】なし