Myrcene Phenotypes

Myrcene phenotypes refer to cannabis plants that express elevated levels of myrcene, a monoterpene commonly found across the plant kingdom. Myrcene is frequently the dominant terpene in cannabis cultivars, particularly in varieties with Indica-leaning genetics. Breeders identify myrcene-dominant phenotypes through chemical analysis (gas chromatography) or by selecting parent plants known to produce this compound consistently. The terpene's prevalence in certain lineages—particularly descendants of Hash Plant and Skunk genetics—has made myrcene phenotyping a standard practice in breeding programs. Understanding myrcene expression helps geneticists predict terpene profiles across generations and maintain consistency in cultivar development.

Myrcene phenotypes are valuable markers in breeding because the terpene's expression is heritable and relatively stable across growing conditions. Breeders often select for or against myrcene dominance depending on target flavor profiles and lineage goals, as it significantly influences the aromatic character of finished cultivars.