Seed Viability

Seed viability refers to a seed's capacity to germinate and develop into a healthy plant, determined by factors including moisture content, storage temperature, genetic integrity, and age. In cannabis breeding programs, viability assessment is critical for maintaining genetic libraries, evaluating breeding stock, and ensuring consistent propagation outcomes across generations. Breeders typically measure viability through germination testing, tetrazolium (TZ) staining, and vigor assessments. Proper storage conditions—cool, dry environments with controlled humidity—significantly extend seed longevity and maintain genetic fidelity. Understanding viability patterns helps breeders identify which lines require prioritized propagation and which may benefit from periodic regeneration to prevent genetic drift.

Professional breeders monitor seed viability to manage genetic resources efficiently, predict propagation success rates, and plan breeding cycles. Viability data informs decisions about seed inventory rotation, preservation protocols, and which parent lines warrant immediate reproduction versus long-term storage.