ethylene: One of the simplest plant hormones produced in ethylene plants. The structural formula is H2C=CH2, colorless gas, which can be dissolved in water for transport in the body, or diffused into the intercellular space as a gas. It is widely distributed in plant tissues and organs. Almost all tissues have the ability or potential to produce ethylene, which can cause significant changes in the synthesis rate when external conditions (such as drought, stress, injury, etc.) and cell physiological state change. Its production can regulate and control or affect the growth and development of individuals.

Ethephon: A growth regulator that releases ethylene. The chemical name is 2-chloroethylphosphonic acid. The product is a light yellow viscous liquid, which is strongly acidic, soluble in water, stable below pH3, decomposed above pH4 to release ethylene, diluted with water to pH4 or enter the internal environment of the plant, which can gradually decompose and release ethylene. Therefore, the physiological effects of ethylene, such as ripening fruit, promoting shedding and aging, increasing emulsion secretion, promoting seed germination and controlling sex, can be replaced by ethylene.

Ethylene is to imitate the role of ethylene, because ethylene is a gas can not be like other solutions, so the use of ethylene, of course, it is not a substance with ethylene, as a plant growth regulator to use ethylene is a plant growth regulator, the common dosage form is water, it will release ethylene in the process of use, from the effect of regulating plant growth. It is generally used to promote fruit ripening