Table 5 In vitro performance assessment of adapted and non-adapted regenerants for various physiological parameters
From: Induced in vitro adaptation for salt tolerance in date palm (Phoenix dactylifera L.) cultivar Khalas
Regenerants/characters | NaCl (mM) | Photosynthesis rate (µmol/m2/s) | Transpiration rate (mmol/m2/s) | Stomatal conductance (mmol/m2/s) (gs) | Mesophyll conductance (mmol/m2/s) (gm) | Internal CO2 (µmol/mol | WUE (µmol/mmol |
|---|---|---|---|---|---|---|---|
Control | 0 | 6.13 ± 0.80a | 1.35 ± 0.233a | 37.58 ± 14.13a | 44.7 ± 11.4a | 142.0 ± 29.9bc | 4.60 ± 0.74d |
Salt non-adapted (SNA) | 100 | 4.79 ± 0.56bc | 0.74 ± 0.111b | 26.98 ± 4.32b | 33.3 ± 9.2ab | 148.1 ± 23.7bc | 6.49 ± 0.22 cd |
200 | 3.87 ± 1.46c | 0.47 ± 0.210 cd | 21.75 ± 6.28bc | 19.8 ± 9.6bc | 205.7 ± 30.8b | 9.87 ± 5.83bc | |
300 | 4.24 ± 0.17c | 0.34 ± 0.058de | 11.15 ± 2.44d | 11.6 ± 3.9c | 389.9 ± 95.2a | 13.03 ± 2.90b | |
Salt adapted (SA) | 100:100 | 4.48 ± 0.51c | 0.69 ± 0.060bc | 15.45 ± 2.33 cd | 40.0 ± 3.3a | 111.9 ± 9.1c | 6.53 ± 0.73 cd |
200:200 | 5.65 ± 0.44ab | 0.58 ± 0.190bcd | 17.90 ± 7.93bcd | 41.0 ± 17.4a | 160.8 ± 69.0bc | 10.37 ± 2.92bc | |
300:300 | 4.64 ± 0.46bc | 0.21 ± 0.029e | 13.35 ± 1.05 cd | 32.1 ± 2.4ab | 210.7 ± 13.1b | 22.55 ± 4.41a |