Sesquiterpene Compounds

Sesquiterpenes are a large class of volatile organic compounds found in cannabis and many plants, characterized by a 15-carbon backbone (C15H24). These molecules form part of the essential oil profile alongside monoterpenes and are commonly associated with aromas described as earthy, woody, spicy, or herbal. Sesquiterpenes include well-documented compounds such as caryophyllene, humulene, and β-myrcene, which breeders frequently track as genetic markers. Their abundance and ratio vary significantly across cultivars, making sesquiterpene profiling a standard tool in strain classification and lineage documentation. Understanding sesquiterpene chemistry helps cultivators and breeders predict aromatic profiles and select parent plants for specific terpene-forward breeding goals.

Breeders working in terpene-forward genetics often use sesquiterpene profiles as selection criteria when crossing complementary lines. Stable sesquiterpene expression across generations can indicate heritable genetic traits useful for consistent cultivar development.