  We calculate the chromoelectric dipole moment (CEDM) of d- and s-quark in the
supersymmetric SO(10) model. CEDM is more efficient than quark electric dipole
moment (EDM), in inducing the neutron EDM. New, strict constraints on
parameters of the supersymmetric SO(10) model follow in this way from the
neutron dipole moment experiments. As strict bounds are derived from the upper
limits on the dipole moment of odd isotope of mercury.
