A dual picture for meson resonances in terms of two limiting symmeries

On the basis of lightlike chiral algebra, axial charge couplings of meson resonances are studied in terms of the two limiting symmetries, SU(6)sub(S)xO(3)sub(L) and chiral SU(3)xSU(3). By the help of sum rules it is argued that the coexistence of SU(6) and chiral couplings attributes the breaking of one symmetry to the leakage through couplings of the other. Experimental check of this dual picture is made, though it is not conclusive due to the lack of crucial information. The concept of constituent quarks is also discussed in the lightlike formulation. (auth.)