Study on Germination Characteristics of Festuca arundinacea Schreb Seed under Salt Stress

[Objective] The study was to provide the theoretical basis for improving saline land with Festuca arundinacea Schreb and breeding new F.arundinacea variety with salt tolerance.[Method] With F.arundinacea seeds as the materials,the germination test was conducted under the stress of 2,4,8,12 g/L NaCl and 2,4,8,12 g/L NaCl+KCl.With the treatment with distilled water as CK,the effect of salt stress on seed germination characteristics of F.arundinacea was studied.[Result] The seed germination rate of F.arundinacea in CK group was 92% with longest root of 10.27 cm and mean root weight of 0.197 g.Salt stress with low concn.had no obvious effect on seed germination rate of F.arundinacea,but with the increase of salt stress concn.,the seed germination rate significantly decreased.When NaCl was 4g/L,the seed germination rate was 62%,but it only was 11% when NaCl was 12 g/L.When salt was 12 g/L,the average root length and root weight of F.arundinacea were 1.87 cm and 0.001 4 g resp.and the seed vigor indexes of F.arundinacea in treatments with NaCl,NaCl+KCl were decreased to 0.000 8 and 0.010 1 resp.[Conclusion] Salt stress had inhibition on seed germination of F.arundinacea.