Effect of NaCl Stress on Seed Germination and Seedling Growth of Different Barley Cultivars

Seeds of different barley cultivars were treated with 0,4,8,12,16 and 20 mg/mL NaCl solutions to study their germination rate,germination index,vigor index,relative rates of salt injury and seeding growth.As the NaCl concentration increased,seed germination ability was inhibited.The germinations of 3 experimental cultivars were different under different levels of NaCl stress.When NaCl concentration was below 8 mg/mL,salt stress had no effect on seed germination;NaCl stress would inhibit the seedling growth at any concentration.Salt-tolerance of Jiangbei cultivars was the best,the second was Neimeng cultivars and the last was Australia cultivars.