Phytochemical Trait Inheritance

Phytochemical trait inheritance refers to the genetic transmission of secondary metabolite profiles—including terpenes, cannabinoids, and flavonoids—from parent plants to offspring. Unlike single-gene traits, these profiles are typically polygenic, meaning multiple genes contribute to the final chemical expression in any given plant. Breeders working with cannabis genetics track inheritance patterns across generations to identify and stabilize desired phytochemical combinations. Environmental factors (light, temperature, soil) also influence expression, making phytochemical inheritance both a genetic and horticultural consideration. Understanding this trait family is foundational for any breeding program focused on consistency or novel chemotype development.

Breeders use phytochemical trait inheritance mapping to select parent lines that reliably pass target terpene or cannabinoid ratios to F1 and subsequent generations. Stable inheritance of secondary metabolites is essential for creating reproducible cultivars and is often tracked through progeny testing and chemotype screening.