Sesquiterpenes Secondary

Sesquiterpenes are 15-carbon volatile compounds that form a secondary aromatic layer in cannabis, typically expressed at lower concentrations than primary terpenes like myrcene or limonene. This family includes caryophyllene, humulene, and beta-farnesene, among others, and is often associated with woody, spicy, herbal, and earthy aroma notes. Sesquiterpene profiles vary significantly across cultivars and are influenced by genetics, cultivation conditions, and harvest timing. Breeders working in this category frequently study sesquiterpene ratios as markers for phenotype consistency and aromatic complexity. Understanding sesquiterpene expression is central to cannabis breeding for targeted aroma and terpene stability across generations.

Breeders monitor sesquiterpene expression to stabilize secondary aroma profiles and distinguish phenotypes within large families. Sesquiterpene-dominant lines require careful selection and environmental control, as these compounds are heat-sensitive and degraded during improper storage or processing.