2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/183260The Cachazo-Svrcek-Witten (CSW) rule for efficiently calculating gauge theory amplitudes is extended to N=1 supersymmetric QCD (SQCD), incorporating massless quarks, in a way preserving the manifest supersymmetry. Using this extended CSW rule, we obtain compact expressions of all the one-loop MHV amplitudes in SQCD including one or two external quark-antiquark (chiral-antichiral multiplets) pairs. The collinear sigularities of the five point amplitudes are investigated to confirm the consistency of the results.43pages,5figures,PTPTex;v2 2references and related footnote are added;v3 English is improved, to appear in Prog. Theor. PhysHigh Energy Physics - Theorytext