growth retardant One of a group of synthetic compounds that reduce stem elongation in plants by inhibiting the activity of the subapical meristem. An important agricultural use is in the prevention of lodging in cereals. In horticulture retardants are used to produce more compact plants. Some of these compounds inhibit gibberellin synthesis.

growth retardant One of a group of synthetic compounds that reduce stem elongation in plants by inhibiting the activity of the subapical meristem. An important agricultural use is in the prevention of lodging in cereals. In horticulture retardants are used to produce more compact plants. Some of these compounds inhibit gibberellin synthesis.