Traditional seed production programs aim at producing affordable seed potatoes anywhere from four to eight field generations, starting initially from the stage of a microtuber or an indexed tuber and passing through different stages; from Breeder/Basic Seed to Foundation Seed I and II, Certified Seed I and going down to the level of Certified Seed II. The seed potato, grown by the traditional methods, traverses through a minimum of 6 field generations (each field generation taking one year) in order to achieve the market volume and pricing economics. Each field multiplication reduces the unit cost of the seed tubers produced, however the accumulation of pathogenic disease increases with the passing of each field generation, thereby impacting the yield capacity of the resultant seed. |