Phytochemical Pathways

Phytochemical pathways refer to the biochemical routes through which cannabis plants synthesize cannabinoids, terpenes, and other secondary metabolites. These metabolic sequences are shaped by genetic inheritance, environmental conditions, and enzymatic activity within the plant. Understanding phytochemical pathways is foundational to cannabis breeding, as they determine the chemical profile of a finished plant—including cannabinoid ratios, aromatic compounds, and minor constituent expression. Breeders studying pathway genetics can predictably work toward specific chemical outcomes across generations. Different cultivar lineages often demonstrate distinct pathway efficiency, affecting both yield and composition of target compounds.

Breeders leverage knowledge of phytochemical pathways to select parent plants with desirable biochemical traits and to stabilize these traits in offspring. By understanding which genetic loci control key enzymatic steps—such as CBDA synthase or limonene synthase activity—cultivators can make informed crosses to enhance or suppress particular compounds.