Scent Genetics

Scent genetics refers to the heritable traits controlling volatile organic compound (VOC) production in cannabis, which define the plant's aromatic profile. These traits are polygenic—controlled by multiple genes—and influenced by terpene synthase expression, precursor availability, and environmental factors during cultivation. Breeders working in this category focus on stabilizing specific terpene ratios and novel VOC combinations across generations. Scent genetics are often mapped alongside cannabinoid loci, as some terpenes and cannabinoids share biosynthetic pathways or regulatory mechanisms. Understanding scent genetics helps breeders select for consistent aromatics while maintaining yield and potency stability. This area of cannabis breeding remains largely empirical, with few published genetic markers available compared to cannabinoid traits.

Breeders use scent genetics to select parent plants with complementary aromatic profiles and stabilize desirable VOC expression across F1 and F2 generations. Phenotypic selection for scent is common in backcrossing programs, as aroma can indicate underlying chemotype and stress-response traits linked to terpene production.