Terpene Phenotyping

Terpene phenotyping refers to the identification and classification of cannabis plants based on their volatile aromatic compound profiles—the terpenes they produce. Rather than a single aroma itself, it is a systematic approach breeders and researchers use to categorize plants by their characteristic scent signatures, which result from genetic expression and environmental factors. Common phenotypic groupings include myrcene-dominant (earthy/herbal), limonene-dominant (citrus), and pinene-dominant (pine/sharp) profiles. Terpene phenotypes remain relatively consistent across a strain's lineage but can shift with cultivation conditions, harvest timing, and curing methods. Understanding terpene phenotypes helps breeders select parent plants for consistent aromatic traits and allows cultivators to recognize stable genetic markers in their crops.

Breeders use terpene phenotyping as a selection criterion to establish and stabilize aromatic profiles across generations. By identifying and isolating plants expressing desired terpene combinations, breeders can develop consistent seed lines and predict offspring aromatic characteristics with greater accuracy.