Effective action in general chiral superfield model

The effective action in general chiral superfield model with arbitrary k"{a}hlerian potential $K(\bar{\mathrm{\Phi }},\mathrm{\Phi })$ and chiral (holomorphic) potential $W(\mathrm{\Phi })$ is considered. The one-loop and two-loop contributions to k"{a}hlerian effective potential and two-loop (first non-zero) contribution to chiral effective potential are found for arbitrary form of functions $K(\bar{\mathrm{\Phi }},\mathrm{\Phi })$ and $W(\mathrm{\Phi })$. It is found that despite the theory is non-renormalizable in general case two-loop contribution to holomorphic effective potential is always finite.