What is the relationship between seed viability and seed age?

Seed viability typically declines with age, as the physiological and biochemical processes within the seed deteriorate over time. Factors such as moisture content, temperature, and storage conditions also influence this relationship. Generally, seeds stored under optimal conditions can retain viability for several years, but as they age, the likelihood of germination decreases significantly. Therefore, understanding this relationship is crucial for effective seed storage and agricultural practices.