  Sum rules of superconvergence type for parity violating amplitudes (p.v.
analogue of Gerasimov-Drell-Hearn sum rule) are considered. Elementary
processes initiated by polarized photons in the lowest order of electroweak
theory are calculated as examples illustrating the validity of the p.v.sum
rules. The parity violating polarized photon-induced processes for proton
target are considered in the frame of effective low energy theories and
phenomenological models based on p.v. nucleon-meson effective interactions.
Assuming the saturation of p.v. sum rule the possibility to limit the range of
the parameters, poorly known from existing experimental data and used in these
models is discussed. The asymmetries for p.v. $\pi^0$ and $\pi^+$ production,
measurable in future high intensity polarized photon beams experiments, are
given.
