Abstract: Effect of pretreatment solution and duration on the growth of tomato cuttings for propagating in nutrient solution was studied. The results showed that the cuttings pretreated with a solution containing CaCl2 grew best among all tested materials. The growth of cuttings was significantly higher than those of control, NAA and IBA. At CaCl2 200 mgL-1, the best results on the area increase and color index of the leaves as well as the length, activity, and count of the roots on the tomato cuttings were found. The optimal pretreatment duration for the propagation was 30 min. It appeared that by pretreating the cuttings for half an hour in a solution with appropriate concentration of exogenous Ca2+, root formation and quality of the tomato cuttings in nutrient solution could be improved.