Plant growth regulators are a kind of substances with similar physiological and biological effects as plant hormones. Zhengzhou Zhonglian Chemical Co., Ltd. found that substances with the function of regulating plant growth and development include amino ester (DA-6), clofenurea, sodium nitrophenolate, auxin, gibberellin, ethylene, cytokinin, abscisic acid, brassinolide, salicylic acid, jasmonic acid, polyamines and so on. As a plant growth regulator, it is mainly used in the first nine categories.
For target plants, plant growth regulators are exogenous non-nutritive chemicals, which can usually be delivered to the action sites in plants, and can promote or inhibit some links in their life processes at very low concentrations, so that their development can meet human needs. Each plant growth regulator has a specific purpose and its application technology is quite strict. Only under specific application conditions (including external factors) can it have a specific impact on the target plants. Often changing the concentration will get the opposite result, such as promoting at low concentration and inhibiting at high concentration. Plant growth regulators have many uses, which vary with varieties and target plants. For example: controlling germination and dormancy; Promote rooting; Promote cell elongation and division; Controlling lateral buds or tillers; Control plant type (short and strong to prevent lodging); Controlling flowering or sex, inducing seedless fruit; Sparse flowers and fruits to control fruit drop; Control the shape or maturity of fruit; Enhance stress resistance (disease resistance, drought resistance, salt tolerance and frost resistance); Enhance the ability to absorb fertilizer; Increase sugar or change acidity; Improve fragrance and color; Promote milk or resin secretion; Defoliation or accelerated estimation (convenient for mechanical harvesting); Save, etc. Some plant growth regulators will become herbicides when used at high concentrations, while some herbicides also have growth regulation effects at low concentrations.
Common plant growth regulators are available aminoethyl ester (DA-6), clofenurea, sodium nitrophenolate, brassinolide, gibberellin and so on.
Amino methyl ester (DA-6), clofenurea, sodium nitrophenolate, gentamicin, sodium naphthylacetate and methyl naphthylacetate are used to prolong the dormancy of storage organs.
Breaking dormancy and promoting germination: gibberellin, kinetin, amino ester (DA-6), clofenurea, sodium nitrophenolate, thiourea, chloroethanol, hydrogen peroxide.
Gibberellin, amino ester (DA-6), 6- benzylaminopurine, brassinolide, triacontanol for promoting stem and leaf growth.
Indobutyric acid, naphthylacetic acid, 2,4-D, Bijiu, paclobutrazol, ethephon and 6- benzylaminopurine promoted rooting.
Paclobutrazol, Youkangzuo, Chlormequat, Bijiu, Pixar, Triiodobenzoic acid, Qingxian and Fenxiuning, which can inhibit the growth of stem and leaf buds.
Promote the flower bud formation of ethephon, Bijiu, 6- benzylaminopurine, naphthylacetic acid, 2,4-di and chlormequat.
Inhibition of gibberellin formation in flower buds and regulation of phosphine.
Naphthacetic acid, carbaryl, ethephon, gibberellin, indanate and 6- benzylaminopurine are used for flower and fruit thinning.
2,4-D, DA-6, clofenurea, sodium nitrophenolate, anticonvulsant, gibberellin, 6- benzylaminopurine for flower and fruit protection.
Paclobutrazol, chlormequat chloride, ethephon and Bijiu prolonged the flowering period.
Ethephon, naphthylacetic acid, indoleacetic acid and chlormequat chloride were induced.
Induced production of gibberellin
Preservation of cut flowers: aminoethyl vinyl glycine, aminoacetic acid, silver nitrate and silver thiosulfate.
Gibberellin, 2,4-D, anticonvulsant, naphthylacetic acid and 6- benzylaminopurine were formed in seedless fruits.
Aminomethyl ester (DA-6), clofenurea, sodium nitrophenolate, ethephon and Bijiu for promoting fruit ripening.
Delaying fruit ripening 2,4-d, gibberellin, Bijiu, kinetin, naphthylacetic acid, 6- benzylaminopurine.
Anti-aging 6- benzylaminopurine, gibberellin, 2,4-d, kinetin.
Paclobutrazol can increase amino acid content, resist falling and reach inda.
Improve the contents of protein, clomazone, simazine, atrazine and naphthylacetic acid.
Increase sugar content, increase phosphonomethyl, adjust phosphonomethyl, Pixar.
Amino methyl ester (DA-6), clofenuron, sodium nitrophenolate, Bijiu, indanate and paclobutrazol for promoting fruit coloring.
Increase fat content, naphthylacetic acid, fresh elements, plastic elements.
Abscisic acid, paclobutrazol, Bijiu and Chlormequat can improve stress resistance.