Paclobutrazol is a plant growth regulator that inhibits it. Paclobutrazol is an inhibitor of endogenous gibberellin synthesis, which can significantly weaken the apex growth advantage and promote the growth of lateral buds, thick stems, and compact plants.
Paclobutazole can increase chlorophyll, protein and nucleic acid content, reduce the content of gibberellin in plants, and also reduce the content of indoleacetic acid and increase the release of ethylene. It works mainly through root absorption. The amount absorbed from the leaf is small, which is not enough to cause morphological changes, but it can increase yield.