Carotenoid Production

Carotenoid production refers to the plant's capacity to synthesize and accumulate carotenoid pigments—organic compounds responsible for yellow, orange, and red hues in cannabis flowers and leaves. These pigments are secondary metabolites that develop alongside chlorophyll breakdown during flowering and senescence, influenced by genetics, light exposure, and nutrient availability. Carotenoids include β-carotene, lycopene, and xanthophyll derivatives, which are also present in many other plants. In cannabis breeding, carotenoid expression is often observed as a visible trait marker, with some cultivars consistently exhibiting more vivid orange or golden tones than others. The genetic basis for carotenoid accumulation remains incompletely characterized, though breeders working in this category note variation across lineages and growing conditions.

Breeders often use carotenoid expression as a visual selection criterion when developing cultivars with distinct phenotypes. Because pigmentation can vary with environment and age, consistent carotenoid production across generations is valued as a stable genetic marker for lineage tracking and phenotype consistency.