Table 3.
Effect of salinity on germination indices of sorghum seedlings during the early growth stage.
| Genotypes | SSG 59-3 | G-46 | CSV 44F | PC-5 | |
|---|---|---|---|---|---|
| Germination Percent (%) | |||||
| Control | 95.98 ± 0.97 a,d | 93.98 ± 0.95 a,c | 86.11 ± 0.86 a,b | 79.91 ± 0.92 a,a | |
| 60 mM NaCl | 94.36 ± 0.54 a,d | 89.06 ± 1.05 b,c | 72.99 ± 0.74 b,b | 68.30 ± 0.68 a,b | |
| 80 mM NaCl | 80.62 ± 1.21 c,d | 74.96 ± 1.16 c,c | 64.41 ± 0.76 b,b | 58.60 ± 0.33 a,b | |
| 100 mM NaCl | 73.73 ± 1.12 d,d | 66.33 ± 0.66 c,d | 51.66 ± 0.80 b,d | 45.53 ± 0.46 a,b | |
| 120 mM NaCl | 64.41 ± 0.76 d,e | 56.18 ± 0.33 c,e | 43.56 ± 0.44 b,e | 38.13 ± 0.22 a,e | |
| 140 mM NaCl | 54.70 ± 0.85 d,f | 48.51 ± 0.49 c,f | 34.53 ± 0.40 b,f | 29.10 ± 0.17 a,f | |
| Root Length (cm) | |||||
| Control | 14.50 ± 0.15 d,f | 12.50 ± 0.13 c,f | 8.12 ± 0.08 b,f | 7.69 ± 0.09 a,f | |
| 60 mM NaCl | 12.42 ± 0.07 d,e | 11.68 ± 0.13 c,e | 6.40 ± 0.07 b,e | 5.54 ± 0.06 a,e | |
| 80 mM NaCl | 11.31 ± 0.17 d,d | 10.53 ± 0.16 c,d | 5.34 ± 0.06 b,d | 4.27 ± 0.02 a,d | |
| 100 mM NaCl | 10.32 ± 0.15 c,d | 9.31 ± 0.10 c,c | 4.66 ± 0.07 b,c | 3.56 ± 0.04 a,c | |
| 120 mM NaCl | 9.66 ± 0.11 b,d | 8.73 ± 0.05 b,c | 3.27 ± 0.04 b,b | 2.91 ± 0.02 a,b | |
| 140 mM NaCl | 8.41 ± 0.13 a,d | 7.03 ± 0.07 a,c | 1.68 ± 0.02 a,b | 1.01 ± 0.01 a,a | |
| Shoot Length (cm) | |||||
| Control | 22.50 ± 0.23 d,f | 21.29 ± 0.22 c,f | 16.28 ± 0.18 b,f | 14.35 ± 0.15 a,f | |
| 60 mM NaCl | 20.66 ± 0.12 d,f | 20.33 ± 0.24 c,e | 12.87 ± 0.13 b,e | 11.40 ± 0.12 a,e | |
| 80 mM NaCl | 16.22 ± 0.24 d,d | 15.40 ± 0.24 c,d | 11.43 ± 0.06 b,d | 9.66 ± 0.11 a,d | |
| 100 mM NaCl | 14.26 ± 0.21 c,d | 13.17 ± 0.13 c,c | 9.90 ± 0.10 b,c | 6.48 ± 0.10 a,c | |
| 120 mM NaCl | 12.07 ± 0.13 b,d | 12.24 ± 0.07 b,c | 9.53 ± 0.06 b,c | 5.35 ± 0.06 a,b | |
| 140 mM NaCl | 11.56 ± 0.19 a,d | 10.59 ± 0.11 a,c | 7.93 ± 0.05 a,b | 3.21 ± 0.12 a,a | |
| Seed Vigor I | |||||
| Control | 4109.31 ± 41.51 d,f | 3733.37 ± 37.72 c,f | 2672.55 ± 26.59 a,f | 2837.27 ± 32.55 b,f | |
| 60 mM NaCl | 3460.16 ± 19.91 d,e | 3075.06 ± 35.99 c,e | 2050.66 ± 20.72 a,e | 2051.16 ± 11.80 b,d | |
| 80 mM NaCl | 3267.07 ± 49.21 d,d | 2918.17 ± 45.07 c,d | 2123.51 ± 24.85 a,d | 1842.57 ± 18.34 b,e | |
| 100 mM NaCl | 2908.69 ± 44.16 c,d | 2717.37 ± 26.91 c,c | 1520.37 ± 23.48 a,c | 1558.00 ± 15.50 b,c | |
| 120 mM NaCl | 2425.43 ± 28.38 b,d | 2152.01 ± 12.51 b,c | 1151.29 ± 11.40 a,b | 1324.31 ± 7.70 b,b | |
| 140 mM NaCl | 2140.77 ± 33.07 a,d | 1106.25 ± 10.96 a,c | 490.31 ± 5.62 a,a | 409.85 ± 2.37 a,b | |
| Seed Vigor II | |||||
| Control | 19.66 ± 0.20 c,e | 25.33 ± 0.26 d,e | 24.09 ± 0.24 b,e | 22.36 ± 0.26 a,f | |
| 60 mM NaCl | 26.82 ± 0.16 c,f | 30.19 ± 0.35 d,f | 24.00 ± 0.24 b,e | 19.47 ± 0.20 a,d | |
| 80 mM NaCl | 21.63 ± 0.33 c,d | 19.25 ± 0.30 d,d | 19.46 ± 0.23 b,d | 19.20 ± 0.11 a,d | |
| 100 mM NaCl | 19.00 ± 0.29 c,e | 19.80 ± 0.20 c,d | 12.15 ± 0.19 b,c | 14.52 ± 0.15 a,c | |
| 120 mM NaCl | 17.11 ± 0.20 b,c | 19.40 ± 0.12 d,d | 10.89 ± 0.11 b,b | 10.70 ± 0.06 a,b | |
| 140 mM NaCl | 19.92 ± 0.31 c,e | 19.80 ± 0.20 c,d | 4.60 ± 0.06 a,b | 4.01 ± 0.02 a,a | |
All analyzed data are expressed as mean ± SD. Values are presented on a fresh weight basis. a–f Values with different superscripts in the same row are significantly different at p < 0.05.