Circadian Terpene Regulation

Circadian terpene regulation describes the time-dependent fluctuation of volatile compound expression in cannabis plants throughout a 24-hour cycle. Research into diurnal terpene patterns has shown that certain chemotypes express elevated terpene concentrations at specific times—often peaking in early morning or late afternoon hours. This phenomenon reflects the plant's endogenous biological clock interacting with light cycles, temperature shifts, and metabolic processes. Breeders and cultivators studying this trait investigate how photoperiod manipulation, temperature cycling, and harvest timing influence terpene profile stability and composition. Understanding circadian terpene dynamics remains relevant for optimizing extraction timing and predicting chemotype expression under varied environmental conditions.

Breeders tracking circadian regulation may select for stable terpene expression across harvest windows, or conversely, develop cultivars with pronounced peak times for targeted cultivation protocols. This trait intersects with photoperiodic breeding strategies and environmental control systems used in standardized production.