| The seeds of Hedysarum scoparium were treated with different concentrations of NaCl.The germination percentage,growth status of their roots and shoots were observed.The imbibition rate and the amylum enzyme activity of the seeds were determinated.The results showed that the adaptation of Hedysarum scoparium to the salt sress were approved.The germination of the seeds were all above 90% by the lower concentrations of NaCl(≤0.9%).With increasing of the concentrations of NaCl,the imbibition rate and the amylum enzyme activity were restrained.The germination rate,the germination index and the vigor index all presented downtrend.The growth of the seedlings were not influenced by the lower concentrations of NaCl≤0.6%,but the radicle elongation was completly inhibited by the concentrations of NaCl≥1.5%. |