Myrcene Forward Breeding

Myrcene-forward breeding refers to selecting cannabis genetics for elevated myrcene terpene expression across generations. Myrcene is the most abundant terpene in many cannabis cultivars and is commonly associated with earthy, herbal, and sometimes fruity aromatic profiles. Breeders working in this category prioritize myrcene production through phenotype selection, plant testing, and crosses between myrcene-rich parents. This approach has historical significance in landrace and hash-plant breeding traditions. Myrcene levels are influenced by genetics, environmental stress, harvest timing, and post-harvest handling, making phenotypic stability a breeding focus.

Breeders select myrcene-forward lines to stabilize this dominant terpene across F1 and stabilized seed generations, often crossing complementary cultivars to maintain or enhance myrcene expression while preserving other desired traits. Understanding myrcene ratios relative to limonene, pinene, and other terpenes helps breeders create predictable aromatic signatures in commercial and specialty line