The origin of plant growth regulator and its relation with plant hormone
As is the same with insecticide and fungicide, plant growth regulator is also one kind of pesticide.
Plant growth regulator is a kind of substance that has plant hormone activity and is synthesized by artificially counterfeiting the chemical structure of plant hormone or it can be extracted from microorganism. It can promote or inhibit the growth and development of plant under low concentration, which will work by stimulating or inhibiting the conversion speed or conversion number of endogenous hormone in the plant body.
Plant cell division, growth, differentiation, leaf senescence and leaf drop, seed dormancy, bud dormancy and other physiological processes, can all be controlled by hormones. Hormone is a kind of compound that is widely distributed in plant body. Although the content is as low as parts per million in plant body, it will have huge effect.
Since we have learnt about the chemical structure of hormones, scientists have successfully synthesized plant growth regulator, a kind of compound that has more quantity and stronger functions by manual methods. As plant growth regulator can promote or inhibit the growth and development of plant, it has been widely used in agriculture industry. Plant growth regulator is a kind of pesticide as well as is also a kind of organic compound that has natural hormone activity and is artificially synthesized. It has been found that the substances that can regulate the growth and development of plant mainly include auxin, gibberellin, ethene, cytokinin, abscisic acid, brassinolide, diethylaminoethyl hexanoate, forchlorfenuron (KT-30), compound sodium nitrophenolate, 6-BA, sodium naphthalene-1-acetate, 5-nitroguaiacol sodium salt, indolebutyric acid and so on.