Gibberellin Signaling

Gibberellin signaling refers to the plant hormone regulatory pathway that governs growth elongation, flowering timing, and seed germination in cannabis and other plants. Rather than a terpene itself, gibberellins are plant hormones that influence terpene production and plant morphology during development. Breeders observe gibberellin activity as a key factor in phenotypic expression—affecting internode spacing, flowering onset, and secondary metabolite accumulation. Understanding gibberellin pathways helps explain why genetically identical plants can display different growth structures and terpene profiles under varying environmental conditions. This hormone system is foundational to breeding work targeting specific plant architecture or reproductive timing.

Breeders working with photoperiod and autoflowering genetics leverage gibberellin dynamics to select for compact growth, rapid flowering, or extended vegetative phases. Exogenous gibberellin application during breeding programs is sometimes used as a diagnostic tool to understand developmental constraints or to induce flowering in recalcitrant lines.