  In this paper, we solved the coupled
Dokshitzer-Gribov-Lipatov-Altarelli-Parisi (DGLAP) evolution equations for
singlet and gluon structure functions in leading order (LO) at low-x assuming
the Regge behaviour of quark and gluon structure functions at this limit, and t
and x-evolutions of singlet and gluon structure functions are presented. We
have compared our results of gluon structure function with global MRST 2004 and
GRV 1998 gluon parameterizations and the results of deuteron structure function
with New Muon Collaboration (NMC) data. We have shown that the solutions of
coupled equations give accurate results for the structure functions and also
the compatibility of Regge behaviour of quark and gluon structure functions
with perturbative quantum chromodynamics (PQCD) at low-x.
