  The production rates of primary vector and P-wave mesons in Z hadronic decays
are analysed. The mass dependence of production rates for the bottom, charm,
strange charm and three families of the light-flavour mesons is found to be
very similar, allowing to relate the relative production rates for mesons with
different flavours and, possibly, their masses. The strange axial mesons
K_1(1273) and K_1(1402) might be assigned to the 1^+(1/2) and 1^+(3/2) levels
degenerate with the 0^+(1/2) and 2^+(3/2) levels of the K^*_0(1430) and
K^*_2(1430), respectively, if the observed K^*_0(1430) mass is replaced by its
``bare'' q\bar{q} mass corresponding to the K-matrix pole and close to the
K_1(1273) mass. Then the 0^+(1/2) and 1^+(1/2) levels are below the 1^+(3/2)
and 2^+(3/2) levels for the strange, charm and bottom mesons.
