Hormone Signaling Pathways

Hormone signaling pathways in cannabis refer to the biochemical mechanisms through which the plant regulates growth, flowering, and stress responses via endogenous signaling molecules—including auxins, gibberellins, cytokinins, ethylene, and abscisic acid. These pathways control developmental processes such as apical dominance, internode length, flower initiation, and root architecture. Breeders and cultivators study these pathways to understand phenotypic variation, optimize plant structure, and predict response to environmental stressors. Genetic variation in hormone-related genes influences traits like flowering time, plant height, branching pattern, and yield potential across different cannabis varieties.

Breeders working with hormone signaling pathways aim to select for predictable flowering responses, compact growth habits, or enhanced branching without chemical growth regulators. Understanding these pathways helps explain how environmental factors (photoperiod, temperature, stress) trigger developmental switches, enabling more informed line selection and hybrid design.