Methyl-jasmonate Affects the Circadian Petal Movement of Kalanchoe Flowers

Abstract

Application of methyl jasmonate for several hours dampens or stops the circadian petal movement rhythm of Kalanchoe blossfeldiana flowers depending on the duration and concentration. Period length is shortened by more than an hour if methyl jasmonate is offered continuously. This indicates an effect of this substance on the underlying oscillator. A red light of three hours can reinduce rhythmicity in flowers which became motionless by a methyl jasmonate pulse.