Cannabinoid Ratio Phenotypes

Cannabinoid ratio phenotypes describe the genetic expression patterns that determine the relative concentrations of THC, CBD, CBG, and minor cannabinoids within a plant. Rather than a single terpene, this term references the chemotype—the chemical profile—shaped by underlying genetics and environmental factors during cultivation. Breeders working in this category select for stable ratios like 1:1 THC:CBD, high-CBD, THC-dominant, or balanced multi-cannabinoid expressions. Lineage records frequently report that ratio phenotypes breed true when parent plants are carefully chosen, making them reliable targets for seed development and cultivar stabilization. Understanding phenotypic ratios is essential for breeding programs aiming to produce consistent, reproducible cultivars across generations.

Breeders use cannabinoid ratio phenotypes as a primary selection criterion when developing new cultivars, as ratios often show Mendelian inheritance patterns. Stable ratio phenotypes reduce unpredictability in finished crop composition and enable consistent product formulation for seed banks and growers.