Flavonoid Genetics

Flavonoids are a diverse class of polyphenolic compounds found across cannabis plant tissues, contributing to pigmentation, UV protection, and aromatic profiles. Unlike cannabinoids and terpenes, flavonoids are less volatile and often work synergistically with other plant chemistry to shape the overall sensory and biochemical expression of a cultivar. Breeders and researchers have identified over 20 distinct flavonoids in cannabis, including cannaflavin A, quercetin, and kaempferol, each with unique structural properties. Flavonoid expression is influenced by genetics, environmental stress (light spectrum, temperature), and plant maturity. Understanding flavonoid inheritance remains an active area of cannabis breeding science, as these compounds are difficult to measure routinely but may influence cultivar differentiation and stability across generations.

Breeders working in controlled-environment cultivation often select for phenotypes displaying distinct flavonoid profiles, as these compounds contribute to visual distinctions (anthocyanin-based purple or red coloration) and may influence how other metabolites express. Flavonoid-rich lineages are increasingly tracked in breeding programs focused on full-spectrum cannabinoid and terpene diversity.