Sesquiterpene Regulation

Sesquiterpene regulation refers to the genetic and biochemical mechanisms that control the production and expression of sesquiterpenes—C15 compounds including β-caryophyllene, β-myrcene, α-humulene, and α-bisabolol—in cannabis plants. Breeders and researchers track sesquiterpene phenotypes as heritable traits that vary significantly across cultivars, influenced by both nuclear and plastidial genetics. Understanding sesquiterpene regulation helps explain why chemically similar parent plants can produce offspring with markedly different aromatic profiles. This regulatory layer intersects with terpene synthase gene expression, environmental stress response, and developmental stage, making it a complex but valuable breeding target for consistency and diversity alike.

Breeders working in sesquiterpene-focused selection use phenotypic testing and lineage records to identify and stabilize high-sesquiterpene lines or cultivars that suppress sesquiterpenes in favor of monoterpenes. Crosses between sesquiterpene-dominant parents often yield segregating offspring, indicating polygenic control; understanding this inheritance pattern enables more predictable F2 and bac