Cannabinoid Phenotyping

Cannabinoid phenotyping refers to the observable expression of cannabinoid profiles in cannabis plants—the ratio and abundance of compounds like THC, CBD, CBG, and minor cannabinoids. Unlike genotype (genetic code), phenotype is shaped by both genetics and cultivation conditions including light, temperature, nutrient timing, and harvest maturity. Breeders and researchers use cannabinoid phenotyping to classify cultivars and understand how environmental factors influence final cannabinoid composition. This framework is essential for stable breeding programs aiming to produce consistent cannabinoid ratios across generations. Accurate phenotyping relies on chromatography testing and careful documentation of growing conditions, making it a cornerstone of modern cannabis genetics work.

Breeders leverage cannabinoid phenotyping data to select parents for specific ratios (high-THC, high-CBD, balanced, or rare-cannabinoid-dominant lines) and to identify phenotypic stability across multiple grows. Phenotypic consistency is a key marker of a well-established cultivar.