Physiological mechanisms and quantitative trait loci for the salt tolerance in barely

以耐盐品种OUE812和耐盐品种OUC613为材料，研究了盐胁迫胁迫胁迫下小麦耐盐的生理机制。与OUC613相比，oue812植株在短期盐胁迫下保持较高的根系水力导度，在长期盐胁迫下降低叶片Na^+/K^+比值，从而产生较重的干物质。在长期盐胁迫下，OUE 812植株的籽粒成熟能力高于OUC613，籽粒重显著高于OUE 812植株。利用俄罗斯6号和俄罗斯4号的重组自交系，鉴定了盐胁迫条件下籽粒成熟能力的4个数量性状位点。

We investigated the physiological mechanisms of salt stress tolerance in barely by using a tolerant cultivar, OUE812 and a susceptive cultivar, OUC613. OUE 812 plants produced heavier dry matter by keeping high root hydraulic conductance under the short term salt stress and by decreasing Na^+/K^+ ratio in leaves under the long term salt stress compared with OUC613. Under the long term salt stress, OUE 812 plants showed the higher capacity of grain ripening compared with OUC613, resulting in the significant heavier grain weight in OUE 812 plants. By using recombinant inbred lines derived from Russia 6 and H.E.S.4, four regions of quantitative trait loci for grain ripening capacity were identified under salt stress conditions.