Abstract
The multiperipheral model is used to relate the experimental fact, σNN¯tot>σNNtot, to the possibility that the NN¯ channel can annihilate into purely meson final states by exchange of N or N¯ trajectories, whereas the NN channel cannot do so. Our argument shows that from the multi-Regge bootstrap point of view, the combination of baryon and antibaryon trajectories will generate a pair of exchange-degenerate trajectories P and ω. The same line of reasoning can easily be generalized to include strange particles, as well as the (KN, K+N) and (πp, π+p) systems.