Fuente: WIPO "tomato" Disclosed is a method for tracking an agricultural product variety such as a variety of a grain through a supply chain by identifying the agricultural product variety or the variety of the grain based on a distinguishable characteristic of a sample of the agricultural product or grain; wherein the distinguishable characteristic is phenotypic; and the distinguishable characteristic is (i) a seed characteristic of a plurality of seed in the sample; or (ii) a secondary characteristic of plants grown from the seed; or (iii) a combination thereof. Also disclosed is a method of making an agricultural product variety or variety of a grain identifiable by breeding to establish the distinguishable characteristic. Further disclosed is a taxonomy system for identifying an agricultural product variety, such as a grain variety, by defining a set of distinguishable structural features of the agricultural product variety.