Main Classifications and Functions of Plant Growth Regulators
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Rooting Promoters: Encourage the development of new roots in plant cuttings, support faster recovery following transplantation, and help improve plant establishment and survival. Common examples include naphthaleneacetic acid (NAA), indole-3-butyric acid (IBA), and various rooting powders.
Flowering and Fruit-Setting Agents: Support flower bud formation, reduce premature flower and fruit drop, and improve the overall fruit-setting rate. These products are widely applicable to fruit trees, melons, vegetables, and other flowering crops.
Fruit Enlargement and Coloring Agents: Accelerate fruit growth and expansion, promote more consistent coloration, and help improve fruit shape, sweetness, appearance, and commercial value.
Growth Regulators and Dwarfing Agents: Help restrain excessive vegetative growth and reduce problems such as bolting. By controlling shoot elongation and shortening internodes, they can strengthen plant structure, reduce lodging, and encourage nutrients to be directed toward fruit development.
Stress Relief and Resistance Enhancers: Help plants recover from stress or damage associated with excessive pesticide or fertilizer exposure, frost, drought, and other unfavorable conditions. These agents support the restoration of healthy growth while improving the plant's ability to tolerate environmental stress.
Ripening and Defoliation Agents: Help crops reach maturity more evenly and can accelerate leaf aging and shedding when appropriate. This facilitates more concentrated harvesting and can improve the efficiency of mechanized harvesting operations.
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