Phytocannabinoid Genetics

Phytocannabinoid genetics refers to the hereditary factors that govern cannabinoid production—including THC, CBD, CBG, and minor cannabinoids—in cannabis plants. These traits are controlled by multiple genes and enzymes that regulate biosynthetic pathways, ultimately determining the chemical profile of a cultivar. Breeders classify strains by their dominant cannabinoid ratios (THC-dominant, CBD-dominant, balanced, or high-minor-cannabinoid types) to enable targeted selection. Understanding phytocannabinoid genetics is foundational to modern breeding programs, allowing reproducible cannabinoid expression across generations. Lineage records and laboratory testing are commonly used to document and verify these genetic markers in breeding work.

Breeders working in phytocannabinoid genetics use progeny testing, backcrossing, and molecular marker selection to stabilize desired cannabinoid phenotypes. Predictable cannabinoid ratios are essential for commercial cultivar development, research programs, and maintaining strain integrity across seed and clone propagation.