Table 4 Comparison of photosynthetic parameters of sorghum populations under different nitrogen application conditions.
Nitrogen treatment | Net photosynthetic rate (μmol.m-2.s-1) | Stomatal conductance (mol H2O.m-2.s-1) | Intercellular CO2 concentration (μmol.m-2.s-1) | Transpiration rate (μmol CO2.mol-1) | Chlorophyll content (mg.g.FW-1) |
---|---|---|---|---|---|
N0W | 18.65b | 0.27b | 312.7a | 4.29b | 1.08b |
N0Y | 25.67a | 0.32ab | 298.43ab | 5.21a | 1.51a |
N8W | 25.91a | 0.34a | 285.36b | 5.33a | 1.56a |
N8Y | 26.16a | 0.34a | 254.19c | 5.29a | 1.59a |
P-value between nitrogen treatments | 0.008** | 0.012** | 0.036* | 0.041* | 0.039* |
Organic fertilizer P-value | 0.027* | 0.034* | 0.016** | 0.028* | 0.045* |
N*Organic fertilizer intercropping P-value | 0.042* | 0.053 | 0.071 | 0.043* | 0.029* |