甜菜M14品系短期盐胁迫下生理生化指标研究

甜菜M14品系是带有白花甜菜第9号染色体的栽培甜菜单体附加系,具有抗逆、无融合生殖等优异特性。前期工作表明,M14的幼苗可以在400mmol/L NaCl浓度下良好的生长,最高胁迫浓度可达700mmol/LNaCl浓度。以甜菜M14品系的为研究材料,通过测定短时间下不同NaCl浓度（0、200、400mmol/L）胁迫下的甜菜M14品系的叶片质膜透性、MDA含量、脯氨酸等渗透性物质的变化规律,研究甜菜M14品系的生理生化反应,为解释M14品系的高抗盐能力奠定实验基础。

Studies on physiological and biochemical indexes of sugar beet monosomic addition line M14 under short-term salt stress

Sugar beet monosomic addition line M14 are monosomic addition lines of B.Vulgaris L.with an alien chromosome 9 of B.corolliflora Zoss which have many excellent properties such as apomixis and stress tolerance.The previous studies demonstrated that the seedlings of M14 can grow well under 400 mmol/L NaCl and the highest stress concentration arrived 700 mmol/L NaCl.In this study,M14 seedlings by determining the variation of membrane permeability were proposed,content of MDA and proline and other permeable material of M14 leaves.The seedlings of M14 were treated with different concentrations of NaCl salt stress（0,200,400 mmol/L） in a short time.Studies on physiological and biochemical responses of sugar beet M14 will lay a foundation of explaining high salt resistance ability of them.