Gibberellic acids (GAs) are a class of tetracyclic diterpenoid substances, which are used as a growth regulator treatment. The function of GAs is not only to promote plant growth, but also to induce phase transitions during development.
Gibberellic acids (GAs) are a class of tetracyclic diterpenoid substances, which are used as a growth regulator treatment. The function of GAs is not only to promote plant growth, but also to induce phase transitions during development.
GAs can regulate seed dormancy. Some plant seeds are under the dormancy condition during purchasing. GA treatment would stimulate seed germination, and induce hydrolytic enzymes such as amylase and protease. The seeds treated by GA were left to germinate in a dark environment and under low temperature. According to plant physiology, GAs regulate plant development, especially for dwarf cultivars. When the light compensation point of plants is reduced, GA increases the light saturation point range, which improves the effects of light intensity on plant growth and leaf development.
GA also influences the control of flowering time and sex expression. For example, spraying the growth regulator @500~1500ppm on the female cucumber plant can induce the male flower development. Spraying the treatment @10~100 ppm on violets or geraniums for substitute GA for long-day under the short-day condition.
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