将3个品种(系)的马铃薯试管苗在添加不同浓度NaCl的培养基上直接诱导分化成苗，对其耐盐性进行初步鉴定。结果表明，随着盐浓度的增加，3个品种(系)再生苗的根系活力、脯氨酸、可溶性糖含量、SOD酶活性均呈现上升的趋势，其中L03-6品系的根系活力和脯氨酸含量均高于其余两个品种(系)。3个再生品种(系)的POD酶活性比对照下降，且3个马铃薯品种(系)对盐浓度的敏感程度存在差异。

In this experiment， A production of potato varieties and plantlets of the three strains were selected， directly induce to differentiate into seedlings on medium containing different NaCl concentrations， Preliminary identification of its salt tolerance . The results shows as follows with the increase of salt concentration， the activities of root， SOD， Procontent， souble sugar content of potato appeared a rising trend . Which the root activity and proline content of L03-6 were the highest compared with the other tree varieties . Compare with CK， the POD activity of Atlantic， L03-1， L03-6 were reduced . In this experiment four potato varieties on the salt sensitivity presenced difference .

S532

甘肃省农业生物技术研究与应用开发项目(GNSW-2010)；甘肃省农科院农业科技创新专项(2012GAAS12-1)；甘肃省农业科学院中青年基金项目(2014GAAS31)部分内容