Plant Growth Regulators

Plant Growth Regulators (PGRs) are natural or synthetic substances that regulate the growth and development of plants by influencing their physiological processes. These regulators work by mimicking or modifying the action of natural plant hormones, such as auxins, gibberellins, cytokinins, abscisic acid, and ethylene. They play a vital role in processes like cell division, elongation, root and shoot development, flowering, fruit ripening, and stress responses. Widely used in agriculture and horticulture, PGRs help enhance crop yields, manage plant height, promote or inhibit flowering and fruiting, and improve resistance to environmental stresses and pests. Additionally, they are utilized to extend the shelf life of fruits and vegetables, making them essential tools for sustainable farming and precision agriculture.

Plant Growth Regulators Types:

Plant Growth Regulators (PGRs) can be classified into five main types based on their roles in plant growth and development:

1. Auxins: Promote cell elongation, root development, and differentiation.
2. Gibberellins: Stimulate stem elongation, seed germination, and flowering.
3. Cytokinins: Enhance cell division, shoot growth, and delay leaf aging.
4. Abscisic Acid (ABA): Induces seed dormancy, regulates stomatal closure, and improves stress tolerance.
5. Ethylene: Affects leaf abscission, floral senescence, and fruit ripening.

These types work individually or in combination to regulate various plant processes.

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