为探索啤酒大麦甘啤5号在不同浓度盐碱环境下萌发期差异，分别用NaCl和Na2CO3模拟中性盐和碱性盐环境，设置NaCl和Na2CO3的不同浓度梯度对啤酒大麦甘啤5号进行萌发试验，观测发芽势、发芽率、盐害指数、根长和苗长等生理指标。结果表明，当2种盐浓度分别在0(CK)、100、200、300 mmol/L时，啤酒大麦萌发期有明显的差异。随着盐浓度的增加，中性盐(NaCl)环境下的甘啤5号各项测试指标变化趋势平缓，而碱性盐(Na2CO3)环境下的各项测试指标的变化明显。尤其在 100 mmol/L时，碱性盐(Na2CO3)环境下的甘啤5号各项萌发指标均与对照差异极显著(P ＜ 0.01)。

In order to explore the difference of germination period of beer barley cultivar Ganpi 5 under different salinity and alkaline environment， NaCl and Na2CO3 were used to simulate the environment of neutral salt and alkaline salt respectively, and different concentration gradients of NaCl and Na2CO3 were set up to carry out germination experiment on Beer Barley Ganpi 5. The physiological indexes such as germination potential, germination rate, salt injury index， root length and seedling length were observed. The results showed that there were significant differences in the germination period of beer barley when the concentrations of the two salts were 0(CK)， 100， 200 and 300 mmol/L, respectively. With the increase of salt concentration， the test indexes of Ganpi 5 in neutral salt (NaCl) environment changed gently, while those in alkaline salt (Na2CO3) environment changed obviously. Especially when the concentration is 100 mmol/L， the germination indexes of Ganpi 5 in alkaline salt (Na2CO3) environment were significantly different from those of the control(P < 0.01).

S512.3

国家自然科学基金项目(31760358)。