Myrcene Genetics

Myrcene is one of the most abundant terpenes in cannabis and frequently appears in indica-dominant lineages. Genetically, myrcene production is regulated by terpene synthase enzymes, particularly myrcene synthase, which is expressed during flower development. Breeders working in this category often select parent plants showing elevated myrcene profiles to stabilize the trait across generations. Myrcene biosynthesis is influenced by environmental factors including temperature, light intensity, and nutrient availability, making phenotypic expression variable even within stable lines. Understanding myrcene genetics helps breeders predict aroma profiles and terpene complexity in hybrid offspring.

Breeders frequently use myrcene as a marker trait when developing indica-leaning hybrids or stabilizing landrace genetics. Selection for high myrcene-producing parents can reinforce desired aroma families and is often paired with cannabinoid profiling to create consistent cultivars across multiple generations.