Anthocyanin Compounds

Anthocyanins are water-soluble pigments responsible for red, purple, and blue coloration in cannabis flowers and leaves. These compounds are phenolic molecules distinct from terpenes, though often co-expressed in the same plant tissues. Anthocyanin expression is heavily influenced by genetics, temperature, and light exposure during flowering—cooler conditions typically intensify pigmentation. While anthocyanins contribute to visual phenotype documentation in breeding records, their presence does not directly indicate cannabinoid or terpene profiles. Breeders tracking these pigments often correlate them with specific parent lineages, particularly in purple-phenotype strains developed over multiple generations.

Anthocyanin expression serves as a visual marker in selective breeding programs, helping cultivators identify and stabilize desired phenotypes across generations. Breeders working with purple and dark-colored cultivars frequently monitor anthocyanin accumulation as part of phenotype selection criteria, though this trait segregates independently from cannabinoid composition.