Sesquiterpene Profiles

Sesquiterpenes are a class of volatile aromatic compounds found in cannabis that contribute significantly to strain-specific smell profiles. These C₁₅ hydrocarbons—including β-caryophyllene, β-myrcene, and α-humulene—are produced in trichomes alongside cannabinoids and lighter monoterpenes. Sesquiterpene ratios vary widely across cultivars and are influenced by genetics, growing conditions, and harvest timing. Breeders and researchers track sesquiterpene composition as a tool for phenotype selection and stability assessment, since these compounds are relatively stable during storage compared to more volatile monoterpenes. Understanding sesquiterpene profiles helps contextualize aroma stability and the chemical diversity within seed populations and clonal lines.

Cultivators and breeders use sesquiterpene profiling via gas chromatography to identify consistent chemotypes within families and to track trait heritability across generations. Sesquiterpene stability makes them useful markers for selecting stable, true-breeding lines with predictable aromatic expression.