This study was conducted to determine the concentrations of plant growth regulators required for regeneration and the concentrations of antibiotics for the selection of transformed regenerants from lettuce, musk melon and tomato. The optimal concentrations of plant growth regulators for shoot formation were NAA 0.1 mg/$ell$ +BA 0.1 mg/$ell$ for lettuce, NAA 0.01 mg/$ell$ +BA 2.0 mg/$ell$ for melon and NAA 0.1 mg/$ell$ +BA 0.5 mg/$ell$for musk melon. Shoot induction from tomato, lettuce and melon was completely inhibited by 30 mg/$ell$ or higher concentrations of kanamycin. Shoot formation from mu나 melon was not affected by kanamycin up to 40 mg/$ell$, but was reduced in the presence of 50 mg/$ell$ and completely inhibited by 100 mg/$ell$. Shoot formation of all four crops was completely inhibited by higromycin at 10 mg/$ell$. Both carbenicillin and cefatoxinme did not show any negative effects on shoot formation.