Effect of Salt Stress on Seed Germination of Asparagus

Using asparagus variety Apollo as the material,under the conditions of the simulated salt stress(NaCl solution and saline-alkali soil extraction solution),the effect of salinity stress on seed germination rate was studied,and after 13 days,the non-germinated seeds from all the salinity treatments were transferred to distilled water,and the recovered germination was observed.The results showed that the low concentration of salt stress increased the seed germination,with the increasing of salinity,the seed germination decreased.Under the same concentration of salt stress,the inhibition of NaCl solution was greater than that of soil extraction solution.The salt sensitive threshold to the seed germination was 4 g/L in NaCl solution and soil extract.After transferring the non-germinated seeds to distilled water,the total germination rate reached more than 60% of the control,which indicated that seeds had higher germination ability under salt stress.