| KNO3 | Potassium nitrate |
| H2O2 | Hydrogen peroxide |
| MDA | Malondialdehyde |
| ROS | Reactive oxygen species |
| SOD | Superoxide dismutase |
| POD | Peroxidase |
| CAT | Catalase |
| APX | Ascorbate peroxidase |
| N | Nitrogen |
| NaClO | sodium hypochlorite |
| NWL | Control not waterlogging |
| WL | Control waterlogging |
| WLM | WL + 100 µM Melatonin; WLM + 0.25 g KNO3 (WLMN1), WLM + 0.50 g KNO3 (WLMN2), WLM + 0.75 g KNO3 (WLMN3) |
| LSD | Least significant difference |
| DW | Dry weight |
| GS | Glutamine Synthetase |
| NR | Nitrate Reductase |
| GOGAT | Glutamate Synthase |
| GDH | Glutamate Dehydrogenase |
| PDC | pyruvate decarboxylase |
| ADH | Alcohol dehydrogenase |