Sesquiterpene Inheritance

Sesquiterpene inheritance refers to the genetic expression of 15-carbon terpene molecules in cannabis plants, which develop through complex polyploid and epistatic pathways. These compounds—including caryophyllene, humulene, and farnesene—are often inherited through multiple gene loci rather than single dominant traits, making their presence in offspring less predictable than simpler Mendelian traits. Breeders working with sesquiterpene-dominant parents frequently observe phenotypic variation across generations, as environmental stress, light intensity, and soil chemistry also influence sesquiterpene production and ratios. Understanding sesquiterpene inheritance patterns helps breeders stabilize aromatic profiles across seed lines and identify parent plants most likely to express desired terpene combinations.

Sesquiterpene inheritance is central to aroma-focused breeding programs because these heavier terpenes often contribute to complex, woody, spicy, or peppery notes. Breeders use repeated backcrossing and phenotype selection across multiple generations to establish sesquiterpene stability in F2 and F3 lines.