Sesquiterpene Expression

Sesquiterpenes are a diverse class of 15-carbon terpenes that frequently appear across cannabis cultivars, often contributing woody, spicy, earthy, or herbaceous aromatic notes. Common sesquiterpenes in cannabis include β-caryophyllene, α-humulene, β-myrcene, and α-bisabolol, each with distinct chemical structures that influence both aroma and plant physiology. Expression levels vary significantly between strains and are influenced by genetics, environmental stress, harvest timing, and post-harvest handling. Breeders studying sesquiterpene profiles use these compounds as markers for lineage tracking and phenotype selection, since expression patterns often correlate with parent cultivars and growing conditions. Understanding sesquiterpene chemistry helps growers and researchers identify strain stability, predict aroma stability across grows, and develop consistent cultivation protocols.

Breeders frequently monitor sesquiterpene ratios and dominant compounds as markers for phenotypic consistency and parent identification. Sesquiterpene expression under controlled conditions helps establish baseline profiles for strain curation and cross-breeding programs.