论文部分内容阅读
不同浓度ＮａＣｌ胁迫对不同小麦品种种子萌发过程的影响试验结果表明，在盐胁迫下种子发芽率、发芽指数、活力指数和种子内α－淀粉酶活性下降；胚芽渗透势降低；种子内储藏物质转化速度变慢。这些反应均随盐胁迫强度的提高而增强。α－淀粉酶活性与种子萌发活力指数、种子内储藏物质的转化速度等均呈显著正相关。不同品种对盐胁迫反应不同，耐盐品种可维持较高的α－淀粉酶活性，种子内储藏物质转化速度快，具有较高水平的萌发活力
Effects of NaCl stress at different concentrations on the seed germination of different wheat cultivarsThe results showed that seed germination rate, germination index, vigor index and seed a-amylase activity decreased under salt stress; germ osmotic potential decreased; seed storage material conversion Slow down. These responses all increased with the increase of salt stress intensity. α-amylase activity and seed germination vigor index, seed storage material conversion rate was significantly positive correlation. Different varieties responded differently to salt stress. Salt-tolerant cultivars could maintain higher a-amylase activity, and the storage material in seed could transform faster with higher germination vigor