Table 2.
The effect of NaCl stress on different chlorophyll contents of rice with and without the inoculation of isolates ALT11, ALT12, and ALT30.
| SPAD | Chl a | Chl b | Carotenoid | |
|---|---|---|---|---|
| Plants without stress | ||||
| Control | 24.53 ± 0.5c | 36.14 ± 1.0c | 68.19 ± 2.7a | 3.42 ± 0.2b |
| Isolate ALT11 | 28.5 ± 1.0b | 38.85 ± 1.0b | 69.87 ± 2.0a | 4.01 ± 0.7a |
| Isolate ALT12 | 30.40 ± 0.5a | 41.47 ± 1.5a | 72.99 ± 2.0a | 3.98 ± 0.7a |
| Isolate ALT30 | 30.16 ± 0.7a | 40.55 ± 1.5a,b | 71.76 ± 1.5a | 3.98 ± 0.2a |
| 70 mM NaCl stress | ||||
| 70 mM NaCl | 20.04 ± 1.5e | 25.65 ± 0.5e | 47.14 ± 2.0d | 2.68 ± 0.1c |
| 70 mM+ALT11 | 23.07 ± 1.0c,d | 29.57 ± 0.5d | 53.89 ± 3.5c | 3.19 ± 0.1b |
| 70 mM+ALT12 | 27.23 ± 1.0b | 30.06 ± 1.0d | 60.06 ± 3.1b | 3.46 ± 0.2b |
| 70 mM+ALT30 | 22.21 ± 1.0d | 31.45 ± 1.7d | 50.78 ± 3.2cd | 3.40 ± 0.1b |
| 140 mM NaCl stress | ||||
| 140 mM NaCl | 15.66 ± 0.5f | 14.14 ± 0.7g | 24.20 ± 2.0g | 1.29 ± 0.2f |
| 140 mM+ALT11 | 19.63 ± 0.5e | 20.31 ± 1.1f | 32.97 ± 2.9f | 1.73 ± 0.1e |
| 140 mM+ALT12 | 18.94 ± 0.9e | 22.19 ± 1.3f | 37.79 ± 4.0e | 2.20 ± 0.2d |
| 140 mM+ALT30 | 23.14 ± 1.0cd | 20.25 ± 1.0f | 30.25 ± 1.98f | 2.20 ± 0.2d |
A: Chlorophyll content (SPAD), chlorophyll A (Chl a), chlorophyll B (Chl b), and carotenoid contents. Different letters indicate significant differences between the mean values of three replicates ± standard deviation.