Terpene Ratio Profiling

Terpene ratio profiling categorizes cannabis strains by their quantitative composition of volatile aromatic compounds rather than identifying individual terpenes in isolation. This classification system examines how terpenes occur in proportion to one another—for example, strains where limonene predominates over myrcene, or where pinene and caryophyllene appear in near-equal abundance. Breeders and researchers use ratio profiling to map chemotype consistency across generations and to predict aromatic character without relying solely on qualitative descriptions. Terpene ratios can vary significantly between phenotypes of the same strain and are influenced by cultivation environment, harvest timing, and post-harvest handling. Understanding these ratios provides a more precise framework for strain documentation and selection than presence-absence data alone.

Breeders tracking terpene ratios across cultivars can identify parent plants that reliably produce desired aromatic profiles and target specific chemotypes through selective crossing. Ratio profiling also helps document whether a strain maintains chemotype stability or exhibits high phenotypic variance in its secondary metabolite composition.