甘薯愈伤组织对盐胁迫的生理反应研究

摘要

以徐薯18为实验材料，用M S营养液添加不同浓度的NaCl处理甘薯愈伤组织，研究盐胁迫对甘薯愈伤组织可溶性蛋白含量、可溶性糖含量、游离脯氨酸含量、细胞膜透性、超氧化物歧化酶活性、丙二醛含量的影响。结果表明：在盐胁迫下，可溶性蛋白、可溶性糖、丙二醛含量呈先上升后下降的趋势，且都高于对照；游离脯氨酸含量、细胞膜透性呈上升的趋势，且都高于对照；超氧化物歧化酶活性呈下降趋势，且都低于对照。%With sweet potato “xu shu 18” as test material ,it was cultured on the MS medium with different concentra-tions of NaCl respectively for some time .The callus were used to study the changes of soluble protein ,soluble sugar ,proline contents ,cytoplasm membrane permeability ,SOD and MDA .The results showed as follows :under salt stress ,soluble pro-tein ,soluble sugar and MDA contents increased at first and decreased later under different level of salt stress ,but they were higher than the contrast .Proline contents and cytoplasm membrane permeability gradually increased ,but they were higher than the contrast .The activities of SOD gradually decreased .