| PGR | Plant growth regulator |
| SPAD | Chlorophyll content |
| Pn | Net photosynthetic rate |
| Fv/Fm | Maximum quantum yield |
| RuBPCase | Ribulose-1,5-bisphosphate carboxylase/oxygenase |
| PEPCase | Phosphoenolpyruvate carboxylase |
| LAI | Leaf Area Index |
| PAL | Phenylalanine ammonia-lyase |
| TAL | Tyrosine ammonia-lyase |
| CAD | Cinnamyl alcohol dehydrogenase |
| 4CL | 4-coumarate:CoA ligase |
| GS | Glutamate synthetase |
| GDH | Glutamate dehydrogenase |
| GPT | Glutamate-pyruvate transaminase |
| DAA | Days after anthesis |
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