Duality diagrams and the pomeron

A model for the pomeron is suggested, based upon an interpretation of all planar quark diagrams. The model involves as a subclass those «legal» diagrams used to generalize the Veneziano model to supermultiplet scattering. In consequence the definition of duality is enlarged and more specifically the Harari-Freund identification of resonances with Regge poles and pomeron with background is modified.