Abstract
We examine the compatibility of potential models for quarkonium with conventional Regge trajectories, exploring in particular questions of linearity and the existence of daughter trajectories. Using, for practical calculations, an effective power behaved potential, it is found that linearity of Regge trajectories is not a universal characteristic. It occurs only in a specific range of the effective quark mass, namely in the ordinary mesons. The Regge slope is in fact a decreasing function of the effective quark mass. Linearity of the ϱ trajectory requires the ϱ′ to have a mass 1.62 GeV.
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