Table 4. Superoxide dismutase (SOD), catalase (CAT), peroxidase (POD), malondialdehyde (MDA) content of Sorghum bicolor (L.) Moench seedlings under various salt and alkali stresses.
| Treatment | Salinity(mmol/L) | SOD(U/mg-1prot·) | CAT(U/mg-1prot·) | POD(U/mg-1prot·) | MDA(mmol·g-1prot) |
|---|---|---|---|---|---|
| CK | 0 | 20.21±2.44a | 7.91±0.97a | 25.93±2.95a | 3.69±0.37a |
| A1 | 100 | 15.31±0.04b | 6.28±0.17ab | 27.65±1.38a | 5.10±0.34ab |
| A2 | 200 | 13.78±0.57bc | 5.82±1.20abd | 14.94±0.58b | 5.91±1.07abd |
| A3 | 300 | 15.55±0.66b | 4.37±0.11bc | 14.63±2.46b | 9.02±0.65bc |
| B1 | 100 | 14.50±0.87bc | 4.77±0.44bc | 23.76±4.21a | 7.93±1.02ac |
| B2 | 200 | 11.25±0.44cd | 3.40±0.74c | 25.71±4.18a | 6.24±0.81abd |
| B3 | 300 | 9.25±2.55d | 3.28±0.65c | 23.73±0.84ac | 8.82±0.88bc |
| C1 | 100 | 15.70±0.99b | 4.39±0.87bc | 27.92±0.97a | 6.79±0.99abd |
| C2 | 200 | 14.64±0.71bc | 3.71±0.96cd | 11.58±3.25b | 9.25±2.07bc |
| C3 | 300 | 11.17±1.23cd | 5.13±0.54bc | 21.32±2.22bc | 10.61±4.27cd |
Note: Values represent means±S.E. Values at each treatment group followed by different letters are significantly different (P < 0.05)