Auxins

Auxins are plant hormones rather than volatile terpenes, but they merit attention in cannabis breeding contexts. These indole-derived compounds regulate cell elongation, root development, and apical dominance—traits directly relevant to plant architecture and yield structure. While auxins don't contribute to aroma or flavor profiles, their endogenous levels influence how cannabis plants grow during vegetative and early flowering phases. Breeders working in plant morphology often select for auxin-responsive genotypes to achieve desired canopy shapes, branching patterns, and internode spacing. Understanding auxin biology helps explain why certain cultivars express compact versus stretch-prone phenotypes under identical environmental conditions.

Cultivators and breeders monitor auxin-related traits (apical dominance, branching angle, stem thickness) when developing cultivars for specific growing systems. Genotypes with modulated auxin sensitivity may support either centralized or distributed bud structure, influencing both cultivation logistics and final product yield distribution.