Gibberellins

Gibberellins are one of several classes of Plant Growth Regulators, or PGRs.

Gibberellins, sometimes known as GAs, are formed in the plastids, or plant organelles, and then modified in the endoplasmic reticulum and cytosol until they reach their active form. The commonly-used Giberellic Acid is also known as GA3, because it was the third Gibberellin to be discovered and the first to be structurally characterised. Giberellins are naturally occuring, and promote embryonic growth, as well as elongation, and are utilized internally as chemical messengers and for enzyme induction. Gibberellins have been found to be more abundant in plants exposed to cold temperatures.

Antagonists
Known antagonists of Gibberellin include dwarfing agents, such as Ancymidol, Chlormequat Chloride (or CCC), and Paclobutrazol (or PBZ).

PhytoTech Products
Gibberellic Acid is available at PhytoTechnology Laboratories as Product Number G500.

A Solution of Gibberellic Acid is available at PhytoTechnology Laboratories as Product Number G362.

Paclobutrazol is available from PhytoTechnology Laboratories as Product Number P687.