| Flowering time | P-max | Cond | Ci | Tr | WUE-leaf |
---|---|---|---|---|---|---|
 | days | μmol CO2 m− 2 s− 1 | mol H2O m− 2 s− 1 | μmol CO2 mol− 1 | mmol H2O m−2 s− 1 | μmol mmol− 1 |
Drought stress (D) | ||||||
 D-C | 41.75 ± 0.32 c | 10.20 ± 0.68 a | 0.49 ± 0.03 a | 325.29 ± 7.27 a | 11.69 ± 0.85 a | 0.95 ± 0.09 c |
 D-L | 42.92 ± 0.41 b | 7.51 ± 0.47 b | 0.30 ± 0.01 b | 273.83 ± 4.90 b | 5.89 ± 0.55 b | 1.38 ± 0.08 b |
 D-H | 44.54 ± 0.26 a | 6.34 ± 0.21 b | 0.22 ± 0.01 c | 269.69 ± 6.16 b | 3.37 ± 0.16 c | 1.93 ± 0.06 a |
Salinity stress (S) | ||||||
 Control | 42.58 ± 0.33 b | 8.94 ± 0.56 a | 0.38 ± 0.03 a | 305.58 ± 7.17 a | 8.08 ± 0.83 a | 1.36 ± 0.09 a |
 Salinity | 43.56 ± 0.32 a | 7.09 ± 0.33 b | 0.28 ± 0.02 b | 273.62 ± 4.57 b | 5.88 ± 0.63 b | 1.48 ± 0.09 a |
Biochar (B) | ||||||
 B0 | 43.17 ± 0.40 a | 7.02 ± 0.45 b | 0.31 ± 0.03 b | 289.18 ± 7.70 a | 6.13 ± 0.76 a | 1.38 ± 0.11 a |
 B1 | 42.96 ± 0.41 a | 8.47 ± 0.75 a | 0.35 ± 0.04 a | 285.04 ± 7.67 a | 7.42 ± 1.00 a | 1.39 ± 0.11 a |
 B2 | 43.08 ± 0.42 a | 8.55 ± 0.48 a | 0.34 ± 0.03 ab | 294.58 ± 7.85 a | 7.40 ± 1.01 a | 1.50 ± 0.12 a |
ANOVA | ||||||
 D | < 0.001 | < 0.001 | < 0.001 | < 0.001 | < 0.001 | < 0.001 |
 S | < 0.01 | < 0.001 | < 0.001 | < 0.001 | < 0.01 | 0.055 |
 B | 0.896 | < 0.01 | < 0.05 | 0.369 | 0.156 | 0.274 |
 D × S | 0.057 | < 0.01 | < 0.001 | 0.079 | 0.141 | < 0.001 |
 D × B | 0.550 | 0.562 | 0.174 | 0.146 | 0.164 | 0.070 |
 S × B | 0.469 | < 0.05 | 0.094 | < 0.05 | 0.401 | < 0.001 |
 D × S × B | 0.328 | < 0.05 | < 0.05 | 0.156 | 0.717 | 0.339 |