Carotenoids

Carotenoids are lipophilic pigments found in cannabis and many plants, responsible for yellow, orange, and red coloration in flowers and leaves. In cannabis, they accumulate in trichomes and leaf tissue, often becoming more visible as chlorophyll breaks down during late flower or curing. Breeders working with pigmented varieties frequently track carotenoid expression as a visual marker of genetic lineage, particularly in cultivars selected for distinctive autumn-like hues. While carotenoids are chemically distinct from cannabinoids and terpenes, they are studied alongside volatile compounds in phytochemical profiling. Their presence does not directly indicate cannabinoid potency or terpene content, though certain genetic backgrounds prone to carotenoid display may co-express specific aromatic or cannabinoid profiles.

Carotenoid visibility serves breeders as a non-invasive phenotypic marker for tracking cultivar purity and identifying genetic families across generations. Selecting for or against carotenoid prominence can help stabilize desired visual traits in seed lines and clone-only selections without requiring chemical analysis.