Olfactory Phenotype

Olfactory phenotype refers to the observable aromatic expression of a cannabis plant—the specific scent compounds present and their intensity. This phenotypic trait results from both genetic programming and environmental factors like temperature, humidity, and soil composition during cultivation. Within a single strain family, different plants may express notably different aromatic profiles due to phenotypic variation, even when sharing identical genetics. Terpene composition drives olfactory phenotype; the same genetic lineage might produce plants with prominent limonene in one phenotype and myrcene-forward profiles in another. Documenting olfactory phenotypes is essential for strain stability work and selective breeding programs aiming to preserve or amplify desired aromatic characteristics across generations.

Breeders use olfactory phenotype selection to stabilize aromatic traits within cultivars and to identify pheno-hunts that express target terpene profiles. Tracking olfactory expression across generations helps predict heritability and informs decisions about parent stock for crosses.