Physiological and Biochemical Characteristics of Salt-tolerant Tomato

Salt solution and fresh water were used to irrigate the salt-tolerant and control tomatoes. The control tomatoes were not introduced with exogenous DNA. The results showed that the salt-tolerant tomato plants grew better than the control when they were irrigated under salt stress,and the control tomato plants grew short. Additionally,the salt-tolerant tomatoes were obviously higher in the leaf content of vitamin C,proline,chlorophyll and soluble sugar than the control,but much higher in the leaf protein content and lower in the leaf MDA content than the control. Their leaf SOD activity declined slightly than that of the control. It was suggested that the salttolerant tomato had a high salt resistance.