The effects of salt stress on the characteristics of growth and protective enzymes were studied using Limonium bicolor (Bunge) Kuntze.seedlings.Five treatments were arranged:0

50

100

200

and 300 mmol/L.Results showed that (1) At 100 and 200 mmol/L salt stress

the roots length and leaves number of Limonium bicolor were 1.3 and 1.67 times of those of the control

respectively.Fresh weight and dry weight of roots (leaves) were significantly higher than those of the control.Fresh weight of roots and dry weight of leaves were the highest at 100 mmol/L salt stress

which were 1.35 and 1.6 times of those of the control

respectively.At 300 mmol/L salt stress

roots length and leaves number were 0.78 times those of the control and fresh weight and dry weight of roots (leaves)

0.67(0.79) and 0.85(0.69) times of those of the control.The effects of salt stress on aboveground biomass were not significant.(2) With increased salt stress

the three protective enzyme activities of superoxide dismutase (SOD)

peroxidase (POD)

and catalase (CAT) of Limonium bicolor increased

which were the highest at 300 mmol/L salt stress and were 2.12

1.83 and 2.57 times those of the control.T he content of malondialdehyde (MDA) was 1.6 times of that of the control at 300 mmol/L salt stress.(3) The preliminary result showed that Limonium bicolor was a strong salt-tolerance plant and could grow at the salt concentration of 300 mmol/L.