Plant growth regulators have a wide range of applications in agricultural production. As a regulator, it can promote crop rooting and germination, break dormancy, improve survival rate after transplanting, accelerate crop metabolism, increase yield, prevent falling flowers and fruits, and improve fruit quality. At the same time, it can also be used as a fertilizer enhancer to effectively improve fertilizer utilization. The following content specifically lists the specific functions of several common plant growth regulators:
- Auxins
Mainly include: indoleacetic acid, indolebutyric acid, naphthylacetic acid, 2,4-D, etc.
Main functions: promote the growth of plant organs, prevent organ shedding, induce flower bud differentiation, etc.
- Gibberellic acid
Mainly include: gibberellins (such as GA3, GA4, etc.).
Main functions: break dormancy, promote germination; promote branch growth, leaf expansion, parthenocarpy and fruit formation, and are also used for storage, preservation and inhibition of maturity and aging.
- Ethylene
Mainly include: ethephon, ethylene inhibitors, etc.
Main functions: Ethephon mainly plays a role in ripening fruits, promoting flowering and differentiation of female flowers, and promoting the shedding of the skin and core of immature fruits. Ethylene inhibitors inhibit ethylene production, reduce fruit shedding, and inhibit fruit ripening.
- Cytokinins
Mainly include: kinetin (furfurylaminopurine), 6-benzyladenine, eneadenine (zeatin), etc.
Main functions: promote cell division, induce bud differentiation, promote lateral bud development, eliminate apical dominance, inhibit organ aging, and increase fruit setting rate.
- Abscisic acid
Mainly include: S-inducing hormone, chlormequat, paclobutrazol, chlormequat, etc.
Main functions: accelerate organ shedding, inhibit crop growth, regulate seed embryo development, increase stress resistance, etc.
- Others
The main functions of brassinolide: promote plant cell division and elongation; promote root development; enhance photosynthesis, increase chlorophyll content; promote flowering and fruit setting; enhance crop stress resistance.
The main functions of chlorfenapyr: inducing callus growth; enlarging fruits, increasing fruit setting rate, improving quality; preserving freshness.
The main functions of sodium nitrophenolate: cell stimulant, fertilizer synergist; promoting rooting; promoting growth, flowering and fruiting.
The main functions of DA-6: promoting the growth of tubers and rhizomes; protecting flowers and fruits to promote growth; improving yield and quality; extending the life cycle of plants; improving nitrogen fixation ability.
Plant growth regulators have multiple meanings in agricultural production, such as promoting plant growth and development, improving the quality of agricultural products, improving stress resistance, regulating plant flowering and fruiting, saving labor costs and promoting the process of agricultural modernization. However, when using plant growth regulators, it is also necessary to pay attention to the appropriate use to avoid adverse effects caused by excessive use. At the same time, it is also necessary to comprehensively consider factors such as crop types, growth stages and soil conditions to select the appropriate types of plant growth regulators and methods of use.
