Sesquiterpene Breeding

Sesquiterpenes are C₁₅ hydrocarbons comprising roughly 10–15% of cannabis volatile profiles, often dominating alongside monoterpenes in breeding work. Key sesquiterpenes include β-caryophyllene, α-humulene, β-myrcene (technically a monoterpene, but often co-isolated), and α-bisabolol. Breeders selecting for sesquiterpene-forward chemotypes typically target peppery, woody, or herbal aromatic notes while monitoring yield and stability across generations. Sesquiterpene expression is influenced by genetics, cultivation conditions, harvest timing, and storage; lineage records frequently report sesquiterpene profiles shifting across phenotypes within the same cross. Understanding sesquiterpene inheritance patterns supports targeted breeding for consistent terpene expression.

Breeders working in sesquiterpene-dominant categories use chromatographic profiling (GC-FID/GC-MS) to identify and stabilize sesquiterpene-rich phenotypes across F2–F3 generations. Sesquiterpene ratios are often selected alongside cannabinoid ratios to maintain chemotype consistency and consumer expectation in preserved seeds.