Abstract: To protect the germplasm resource of wild Allium mongolicum, prove up the ability for bearing the salt and the feasible condition of domesticating planting. This paper studied the effect of NaCl stress on vigor and activities of an - tioxidant enzymes in Allium mongolicum seed, which the treatments are different salt concentrations. The results showed that:With the increasing of salt concentrations from 20 to 500 mmol/ L, the germination rate, all of germination energy and germination index was decreased significantly except of 20mmol/ L salt treatment, the salt injury ratio of every treatments was increased 13.7%- 99.0% than the control.The SOD and POD activities were significantly higher than the control under 20 and 50mmol/ L salt treatments, but lower when the salt concentrations is above of 100 mmol/ L.The CAT activ- i ty was increased gradually with the increasing of salt concentration. Under NaCl treatments with 20 and 50 mmol/ L, the content of MDA of Allium mongolicum R.Seed is a little lower than that of the control, but increasedwith the increased of the salt concentrations above of 100mmol/L.And the MDA contents of every treatments were all higher than the control. According to above,The Allium mongolicum R. seeds adapt to bourgeon under the salt treatments lower than 100mmol/L.

Key words: Allium mongolicum Regel., Salt stress, Seeds vigor, Antioxidants enzyme

CLC Number: 

• S649