| In this study, seven processing tomato lines were used and simulated salt stress by NaCl was performed. Thirteen indexes regarding salt tolerance of processing tomato seedling were studied by principal component analysis, correlation analysis，subordinative function, and stepwise regression analysis. The results showed that salt tolerance of seven processing tomatoes had an order of KT-55＞KT-25＞KT-63＞KT-16＞KT-40＞KT-18＞KT-70. Root dry weight, MDA, POD were important for salt tolerance. The optimal prediction equation was: D=－0.129+0.004X1+0.002X2－0.001X3, where
X1, X2, and X3 represent the salt tolerance coefficient of the root dry weight, MDA, and POD, respectively. |