Evaluation on the salt resistance of germplasm resources of 33 Elytrigria repens during seed germination period

In order to understand the salt-resistance of 33 Elytrigria repens accessions in the period of seed germination, the germination rate, germination index, the length of plumule and radical and seedling weight were measured under 0,0.4%,0.8% and 1.2% NaCl condition and the evaluation was done by membership function method. The results showed that with the increasing of salt concentration, the germination rate, the germination index，the length of radical and plumule decreased, and the change of seedling weight had no rule. By analysis on indexes variance of different concentration among 33 materials, 1.2%NaCl was appropriate concentration for evaluation on salt-resistance in the period of seed germination of E. repens. According to the comprehensive evaluation of salt-tolerance, E04, E08, E23, E11 and E25 had high salt-resistance, and E27, E35, E37, E38 had low salt-resistance.