Circadian Volatile Expression

Circadian volatile expression refers to the time-dependent variation in terpene and volatile compound profiles within cannabis plants, where aromatic composition fluctuates throughout a 24-hour cycle. Research into cannabis volatilization patterns suggests that environmental factors—including light exposure, temperature cycles, and humidity—influence which secondary metabolites are actively expressed at different periods. Breeders and cultivators working in this category often observe peak aromatic intensity at specific times of day, though individual plant genetics and environmental conditions significantly shape these patterns. Understanding circadian volatile dynamics is relevant to harvest timing decisions and post-harvest preservation protocols. This phenomenon overlaps with broader plant chronobiology research, though cannabis-specific mechanisms remain actively studied in breeding

Breeders tracking volatile stability and consistency across cultivation cycles use circadian expression data to select for genotypes with predictable aromatic profiles independent of time-of-day harvest variation. Strains selected for robust, stable terpene output under variable light and temperature regimens often demonstrate lower circadian volatility fluctuation.