Terpene Expression Dominance

Terpene Expression Dominance refers to the phenotypic prevalence of specific volatile compounds within a cannabis cultivar's chemical profile. Rather than describing a single terpene, this classification captures which aromatic compounds consistently dominate a plant's secondary metabolism across multiple expression cycles. Breeders and geneticists track dominance patterns to predict aroma stability and breeding outcomes. Expression dominance can vary based on cultivation conditions, harvest timing, and genetic background, making it a useful but non-deterministic trait for lineage characterization. Understanding which terpenes reliably express at high levels helps guide cross-breeding strategies and inform cultivar selection for specific aromatic targets.

Breeders working toward stable, distinctive aroma profiles often select parent plants with consistent terpene dominance patterns. Tracking dominant terpene expression across generations helps identify heritable traits and predict offspring chemotype outcomes in structured breeding programs.