Sesquiterpene Pathway

The sesquiterpene pathway represents a biosynthetic route within cannabis plants that produces C₁₅ hydrocarbons—compounds built from three isoprene units. Major sesquiterpenes in cannabis lineages include caryophyllene, humulene, and β-myrcene precursors, which contribute to spice, pepper, woody, and herbal aroma profiles. These volatile compounds are generated through enzymatic processes in trichome tissue and are often associated with specific chemotype lineages and growing conditions. Sesquiterpene expression is influenced by genetics, plant maturity, environmental stress, and cultivation technique. Understanding sesquiterpene production is relevant to breeders selecting for aroma diversity and researchers studying cannabinoid-terpene interactions.

Breeders working with sesquiterpene-rich lineages (particularly Haze, Sativa-dominant, and Old World landrace crosses) often report stabilized pepper, spice, and woody profiles across offspring. Selection for high sesquiterpene expression typically requires multi-generational phenotype screening and controlled drying/storage protocols to preserve volatile content.