Gibberellic Acid is used by growers to stimulate germination of tough seeds.
It is proven to work well on particular types of seed that might otherwise remain dormant.
Gibberellins and Germination
Gibberellins are responsible for promoting growth in the embryo of a seed. It does this the following way Gibberellin released by the embryo travels towards the aleurone layer,
its target tissue situated in the endosperm region of the seed (alongside the embryo).
Gibberellin acts as the inducer, as its presence allows the enzyme induction of amylase, which can break down starch into a sugar to be used in the embryo.
Sugar is used in the plant to synthesise proteins and break out of dormancy. Gibberellins initiate this process in Summer, when the external environment exhibits favourable conditions for plant growth.