Cannabinoid And Terpene Expression

Cannabinoid and terpene expression refers to the biochemical regulation and phenotypic manifestation of cannabinoid and terpene profiles across cannabis genetics. This trait is controlled by multiple genetic loci, environmental conditions (light, temperature, nutrients, stress), and developmental stage, resulting in significant variation even within stable cultivars. Expression patterns are often documented by breeders to establish consistency in secondary metabolite profiles across seed generations. Understanding expression variation is fundamental to cannabis breeding programs seeking stable, predictable chemotypes. Both cannabinoid ratios (THC:CBD, THCV content) and terpene prominence are subject to genotype-by-environment interactions that influence final plant chemistry.

Breeders select for stable, reproducible expression patterns to create reliable seed lines and predictable offspring chemistry. Phenotypic selection across multiple generations, controlled environmental documentation, and chemotype testing help establish consistent cannabinoid-terpene expression profiles in commercial and research cultivars.