Cannabinoid Ratio Types

Cannabinoid ratio types classify cannabis genetics by the proportional balance of major cannabinoids—particularly THC and CBD—rather than absolute potency alone. A strain's ratio framework (THC-dominant, CBD-dominant, balanced, or minor-cannabinoid-forward) is determined by underlying genetics inherited from parent lines and influences breeding direction across generations. Lineage records frequently report cannabinoid ratios as a primary classification marker, since ratio stability is more heritable than individual potency levels. Breeders working in therapeutic and research contexts prioritize ratio consistency when selecting parents, as ratio types breed more true than absolute cannabinoid concentrations. Understanding ratio families helps contextualize genetic parentage, breeding objectives, and how cultivars fit within broader lineage frameworks.

Breeders select parent plants specifically for cannabinoid ratio phenotypes to establish predictable offspring ratios in F1 and stabilized lines. Ratio type becomes a core selection criterion in backcrossing programs, where maintaining genetic balance across cannabinoid profiles is often prioritized alongside yield or terpene expression.