The relation between the \gamma -ray and the emission line luminosities for a sample of 36 \gamma -ray loud blazars is investigated ; an apparent correlation between them , L _ { \gamma } \propto L _ { Line } ^ { 0.69 \pm 0.11 } , with a correlation coefficient r = 0.741 and a chance probability of p = 1.9 \times 10 ^ { -6 } , is found .
It is found , however , that there is no intrinsic correlation between them : the apparent correlation is due to the redshift dependence in a flux-limited sample .
Thus no evidence is found to support the argument that the up-scattered soft photons are from the broad emission lines .
Our analysis does not conflict with the SSC model .
The disk-jet symbiosis and radio/ \gamma -ray correlation found in the literature are also discussed .
The radio/ \gamma -ray correlation may be an apparent correlation caused by the boosting effect since both bands are strongly beamed .