Plant Structure Dominance

Plant structure dominance in cannabis genetics refers to inherited traits that determine overall growth morphology—including node spacing, branching patterns, stem thickness, and canopy architecture. Breeders classify plants along spectrums ranging from compact/bushy phenotypes to tall/linear ones, with these characteristics often linked to specific parent lineages and environmental responses. Structure dominance is particularly relevant in breeding programs targeting yield optimization, space efficiency, or specific cultivation methods. Unlike chemical traits, structural phenotypes are more consistently heritable across generations and less environmentally variable, making them reliable selection markers. Careful documentation of plant structure across multiple generations helps breeders stabilize desired traits and predict offspring morphology.

Breeders actively select for structure dominance when developing cultivars suited to particular growing systems—compact plants for indoor SOG setups, vigorous branchers for outdoor production, or specific internode lengths for controlled-environment agriculture. Stable structural traits reduce phenotypic variation in commercial crops and allow predictable training responses.