  The evolution of the solar neutrino flux which is described by the wave
function $\Psi^T=(\nu_{eL},\nu_{XL}, \overline{\nu}_{eL}, \overline{\nu}_{XL})$
is examined. Our treatment of the problem holds for any standard model (SM)
extensions possessing nonzero dipole magnetic and anapole moments. When the
solar neutrino flux moves through the solar flare (SF) region in the preflare
period, then it undergoes the additional (compared with the SM) resonance
conversions. As a result, the weakening the electron neutrinos flux takes
place. On the other hand, existence of the additional resonances lead to
appearance of the $\overline{\nu}_{eL}$ and $\overline{\nu}_{XL}$ neutrinos
that could be detected by the terrestrial detectors.
  The hypothesis of the $\nu_e$-induced $\beta$-decays is also discussed.
According to it, before the large SF, decreasing the $\beta$-decay rate for
some elements takes place. The possible influence of the electron antineutrino
flux produced in the superflares on the regime of the hypothetical georeactor
is considered.
