  The rapidity and centrality dependence of baryon to meson ratios in Au$+$Au,
Cu$+$Cu and p$+$p collisions at $\sqrt{s_{NN}}$ = 200 GeV at RHIC is presented.
The $\bar{p}/\pi^{-}$ ratios are founded to be independent of collision system
at a fixed $<N_{part}>$ at mid- and forward rapidities.
