Carotenoids

Carotenoids are a class of lipophilic pigments responsible for yellow, orange, and red hues in cannabis flowers, leaves, and trim. These compounds are synthesized from precursor molecules during plant development and accumulate in chloroplasts and chromoplasts. Carotenoids are structurally distinct from chlorophyll and anthocyanins, representing a separate pigment family with their own biosynthetic pathway. In cannabis breeding and cultivation, carotenoid expression is often linked to genetics, light exposure, and plant maturity—plants displaying high carotenoid content are commonly tagged as having "golden," "orange," or "red" phenotypes. Breeders studying pigment diversity typically track carotenoid-rich lines as markers of phenotypic variation and genetic stability across generations.

Breeders working in ornamental and phenotype-selection programs often prioritize carotenoid expression as a visual trait for line differentiation and seed catalog development. Carotenoid profiles can serve as morphological markers in backcrossing programs and F1 stability assessments, helping document consistent plant appearance across seed batches.