2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/167191We have studied the null-plane hamiltonian structure of the free Yang-Mills fields and the scalar chromodynamics ($SQCD_{4}$). Following the Dirac's procedure for constrained systems we have performed a detailed analysis of the constraint structure of both models and we give the generalized Dirac brackets for the physical variables. In the free Yang-Mills case, using the correspondence principle in the Dirac's brackets we obtain the same commutators present in the literature.10 pages, LaTeX 2eHigh Energy Physics - Theorytext