Lycopene

Lycopene is a carotenoid pigment responsible for red and pink coloration in plants, occasionally observed in cannabis flower tissue and trichome coloration. While lycopene is well-documented in tomatoes and other produce, its presence in cannabis genetics remains anecdotal and poorly studied at the molecular level. Breeders working with deep red or pink phenotypes sometimes attribute these colorations to carotenoid accumulation, though pigmentation in cannabis flowers is primarily driven by anthocyanins and chlorophyll breakdown. Lycopene's role in cannabis breeding genetics—if any—remains largely unexplored compared to other secondary metabolites. Understanding whether lycopene actually accumulates in cannabis tissue, or whether observed red hues derive entirely from other pigment classes, requires further genetic and biochemical research.

Some breeders pursuing unusual flower pigmentation have anecdotally selected for red or pink phenotypes, speculatively linking these traits to carotenoid profiles including lycopene. However, without standardized testing or genetic markers, lycopene cannot be reliably selected for in breeding programs, and its functional role in cannabis genetics remains unconfirmed.