Table 3. Membrane damage, SPAD, relative leaf water content and cellular reduction ability for plants grown at varying salt stress for 48 h treated with 0.5 mM γ- aminobutyric acid (GABA) or left untreated.
| Treatment | Membrane damage (%) | SPAD value | Relative leaf water content (%) | Cellular reduction ability (OD 485/50 mg FW) |
|---|---|---|---|---|
| 0 mM NaCl | 21.4 ± 0.76d | 14.2 ± 1.17a | 96.54 ± 1.05a | 0.41 ± 0.04a |
| 150 mM NaCl | 27.9 ± 4.91ab | 11.1 ± 0.66b | 84.91 ± 4.54c | 0.35 ± 0.04b |
| 300 mM NaCl | 30.3 ± 1.23a | 8.5 ± 1.59c | 73.03 ± 0.75d | 0.24 ± 0.03c |
| 0 mM NaCl + 0.5 mM GABA | 22.4 ± 2.41 cd | 14.7 ± 1.91a | 94.82 ± 1.31a | 0.44 ± 0.01a |
| 150 mM NaCl + 0.5 mM GABA | 23.6 ± 1.88 cd | 13.1 ± 0.5a | 89.02 ± 0.87b | 0.41 ± 0.02a |
| 300 mM NaCl + 0.5 mM GABA | 25.7 ± 1.45bc | 9.7 ± 0.75bc | 75.75 ± 0.51d | 0.26 ± 0.03c |
Values are mean ± SE. Values with the same letters in a column are not significantly different at P = 0.05 (LSD test).