Terpene Phenotyping

Terpene phenotyping refers to the systematic identification and categorization of volatile aromatic compounds in cannabis plants based on observable chemical profiles rather than genetics alone. While a plant's genotype determines its terpene potential, environmental factors—light, temperature, humidity, and soil composition—significantly influence which terpenes are actually expressed and in what concentrations. Breeders and researchers use terpene phenotyping to classify plants into aromatic families (citrus-forward, floral, earthy, spicy) and to understand how cultivation conditions shape final product chemistry. This classification method is essential for consistency in breeding programs, as two genetically identical plants can produce distinct terpene profiles under different growing conditions. Terpene phenotyping combines chemical analysis (GC-MS, headspace sampling) with sensory

Breeders use terpene phenotyping data to select parent plants that reliably express desired aromatic compounds across multiple generations and environments. This practice helps establish stable cultivars where terpene profiles remain consistent—critical for commercial seed lines and clone libraries.