Terpene Phenotype Mapping

Terpene phenotype mapping refers to the systematic documentation and categorization of terpene expression patterns across cannabis cultivars and their offspring. Breeders use this practice to identify which genetic markers correlate with specific aromatic profiles, allowing for more predictable selection in multi-generational programs. This approach combines chromatographic analysis (gas chromatography, liquid chromatography) with breeding records to establish relationships between genotype and terpene output. Mapping efforts have revealed that terpene ratios often cluster within certain lineage families, though environmental factors—temperature, light, soil chemistry—significantly influence final expression. Documentation of these patterns supports reproducibility in cultivation and helps breeders understand heritability of aromatic traits across generations.

Breeders conducting terpene phenotype mapping can select parent plants with desired aromatic profiles more reliably and predict offspring terpene ranges before flowering. This data-driven approach reduces trial-and-error cycles and supports the development of stable, consistent cultivars in commercial and research settings.