In order to obtain high quality and resistant resource of wheat,seven high quality and disease-resistant varieties from American had been identified by resistance and quality tests were used for evaluation of salt tolerance. The results showed that the relative germination rate,relative root length,relative bud length,root vigor,chlorophyll content,net photosynthesis rate,transpiration rate and stomatal conductance of 7 wheat varietis were all decreased under salt stress,while POD activity,SOD activity,soluble protein content,MDA content,soluble sugar content,proline content,relative membrane permeability and intercellular CO2 concentration were increased. Cluster analysis results showed that Titch,TVT09L-9 and Xinong 509 showed high salt resistance;NE09L-47,NE09L-60-2 and TVT09L-1 showed salt resistance; NE09L-12 and TVT09L-16 showed medium salt resistance. Chinese spring showed low salt resistance. |