Ethephon is a maturation-promoting plant growth regulator. Ethylene enters the plant through the leaves, bark, fruit or seeds of the plant, and then conducts to the working part, releasing ethylene, which can act as the endogenous hormone ethylene. Its physiological functions, such as promoting fruit ripening and shedding of leaves and fruits, dwarfing plants, changing the ratio of male and female flowers, inducing male sterility in some crops, etc.