Secondary Metabolite Heritability

Secondary metabolite heritability refers to the genetic transmission of non-essential compounds—terpenes, flavonoids, cannabinoids, and phenolic compounds—across cannabis generations. These traits are polygenic, meaning multiple genes contribute to their expression, and environmental factors significantly influence their final phenotypic presentation. Understanding heritability patterns helps breeders predict which lineages will reliably produce specific aromatic or chemical profiles. Seed genetics establish the potential range, but cultivation conditions, stress responses, and harvest timing all modulate actual metabolite accumulation. This interplay between genotype and environment makes secondary metabolite selection both predictable and variable.

Breeders use heritability data to identify parent plants whose secondary metabolite profiles breed true across multiple generations. Tracking terpene and cannabinoid stability in F1, F2, and backcross lines allows cultivators to develop stable cultivars with consistent chemical signatures for commercial or research purposes.