Plant hormones are trace organic substances naturally present in plants that have significant effects on plant growth and development; they are also known as natural plant hormones or endogenous plant hormones. Their presence can influence and effectively regulate plant growth and development, including the entire plant life cycle from cell growth and division to rooting, germination, flowering, fruiting, ripening, and abscission.
Plant growth regulators are substances that have similar physiological and biological effects to natural plant hormones, synthesized artificially after understanding their structure and mechanism of action. These substances are used in agricultural production to effectively regulate crop growth processes, achieving goals such as stable and increased yields, improved quality, and enhanced crop resistance.
Plant growth regulators are artificially synthesized chemical substances that regulate plant growth and development, as well as natural plant hormones extracted from organisms. They are collectively referred to as plant growth regulators.
