Effect of Different Salt Stress on the Seed Germination of Halogeton arachnoideus

[Objective]The research aimed to make stress test of Halogeton arachnoideus seeds with different concentrations and kinds of salt.[Method]Taking H. arachnoideus seed as materials,NaCl,Na2CO3and Na2SO4were used to make the stress test. The effects of salt stress on the seed germination of H. arachnoideus were studied. [Result]Under the salt stress at the concentration of 0 ~ 4000 mg /L,the relative germination rate and relative germination vigor were about 80%,without significant difference. Under the salt stress at higher concentrations(over 6000mg /L),the relative germination rate and relative germination vigor were greatly reduced with the increase of salt concentration,with significant difference. The seedlings of H. arachnoideus emerged relatively tidily under the stress of Na2SO4,and the emergency of H. arachnoideus seedlings under the stress of NaCl was relatively slow,and that under the stress of Na2CO3was the slowest,which indicated that the inhibition of Na2CO3stress on the seed vigor of H. arachnoideus greater than that of NaCl stress and Na2SO4stress. The relative salt poison rate of 3 kinds of salt on the seed germination of H. arachnoideus in order was Na2CO3 NaCI Na2SO4. [Conclusion]The research could provide theoretical basis for the planting,utilization and ecological management of H. arachnoideus in saline land.