Selection Criteria

Selection criteria in cannabis breeding refers to the specific traits breeders prioritize when choosing parent plants for genetic crosses. These criteria might include terpene profiles, cannabinoid ratios, plant morphology, yield potential, disease resistance, or flowering time—each chosen based on the breeder's goals. Understanding selection criteria is foundational to modern cannabis genetics, as it shapes which traits become dominant in subsequent generations. Breeders often document their selection rationale to establish consistency within strain families and maintain stable phenotypes across seed runs. Selection criteria also interact with environmental factors; the same genetic material may express differently under varied growing conditions, making controlled selection practices essential for reproducible results.

Breeders use documented selection criteria to guide parent plant selection, ensuring that desired traits concentrate over multiple generations. Clear selection protocols allow breeding programs to stabilize uncommon terpene combinations, cannabinoid profiles, or plant structures while reducing unwanted phenotypic variation.