Table 5 Effect of different concentrations of arginine and SNP on some compatible solutes, phenols, and auxin contents of sunflower plants under salinity stress
Salinity | Materials | Conc. (mM) | TSS (mg/100g dry wt.) | Proline (mg/g dry wt.) | Free AA (mg/g dry wt.) | Phenol (μg/g dry wt.) | IAA (μg/g fresh wt.) |
|---|---|---|---|---|---|---|---|
0 | Control | 0 | 1535.10 | 8.79 | 124.81 | 13.91 | 46.60 |
Arginine | 10 | 2115.11 | 12.11 | 171.96 | 16.52 | 50.71 | |
20 | 2544.07 | 14.57 | 206.84 | 19.41 | 56.85 | ||
SNP | 0.25 | 1887.00 | 13.62 | 155.05 | 18.70 | 52.00 | |
0.50 | 2160.50 | 14.37 | 175.65 | 19.34 | 51.96 | ||
5000 (mg/L) | Control | 0 | 2611.29 | 14.95 | 212.30 | 16.12 | 37.57 |
Arginine | 10 | 3065.78 | 17.55 | 249.25 | 17.46 | 40.68 | |
20 | 3277.34 | 18.76 | 266.45 | 17.98 | 43.13 | ||
SNP | 0.25 | 2990.35 | 15.34 | 217.80 | 17.10 | 41.09 | |
0.50 | 3261.29 | 16.45 | 232.30 | 17.62 | 41.57 | ||
LSD at 5% | 78.42 | 0.51 | 6.14 | 0.47 | 1.29 | ||
LSD at 1% | 108.10 | 0.70 | – | 0.65 | 1.78 | ||