Myrcene Expression Variability

Myrcene Expression Variability describes the range in myrcene production across cannabis genotypes, from trace amounts to dominant terpene status. Myrcene is the most abundant terpene in many cannabis populations, yet expression levels vary significantly even within closely related lineages. This variability stems from both genetic factors and environmental conditions during flowering, making myrcene a key trait in breeding programs focused on terpene profiling. Understanding myrcene expression helps breeders stabilize terpene phenotypes and predict aromatic characteristics across generations. Lineage records frequently report myrcene-dominant cultivars emerging from the same parent stock at different expression levels, highlighting the complexity of terpene inheritance.

Breeders working in terpene-targeted selection programs use myrcene expression variability as a marker for phenotype stability and environmental sensitivity. Identifying high-expression and low-expression myrcene lines enables backcrossing strategies to create consistent aromatic profiles across seed batches.