为探明盐胁迫对马铃薯生长发育及产量的影响，以定薯4号脱毒原原种为材料，采用盆栽方式，以4个NaCl浓度处理模拟不同程度盐逆境，研究NaCl处理对马铃薯产量、品质、抗氧化系统、叶片超微结构及淀粉粒形态的影响。结果表明，随着NaCl浓度的增加，马铃薯产量及品质均会发生不同程度的下降，叶片丙二醛(MDA)、脯氨酸(Pro)、过氧化物酶(SOD)及超氧化歧化酶(POD)含量(活性)均有不同程度升高，叶片超微结构和淀粉粒形态发生变化。盐逆境严重抑制了马铃薯的生长发育，盐逆境下氨基酸含量、可溶性蛋白含量、酚类物质含量及淀粉含量与产量呈极显著正相关。

In order to explore the effects of salt stress on potato growth and yield. Using of the original seed of Dingshu 4 as the material with the potted method， the effects of NaCl on potato yield， quality，antioxidant system， ultrastructure of leaves and starch grain morphology were studied by using 4 NaCl concentrations to simulate different degrees of salt stress. The results showed that with the increase of NaCl concentration， the yield and quality of potato decreased to different degrees， the content(activity) of malondialdehyde(MDA)， proline(Pro)， peroxidase(SOD) and POD in leaves increased to different degrees，and the ultrastructure and starch morphology of leaves changed. The content of amino acid， soluble protein，phenolic substance and starch were positively correlated with the yield of potato under salt stress.

S532

国家现代农业产业技术体系(CARS-10)；甘肃省科技重大专项(17ZD2NA016)。