Table 2.
Mean values of ear and flag leaf blade photosynthesis expressed as the instantaneous net photosynthetic rate and instantaneous dark respiration for the control and the two DCMU treatments
Analysis of variance (ANOVA) for the effect of genotype and treatment is shown. Mean values with different superscripted letters are significantly different according to the Tukey’s honestly significant difference test (P<0.05). Each value represents five genotypes and three replications per genotype (one genotype was discarded due to early phenology). Experiment performed in the 2012 crop season.
| Flag leaf (μmol·m −2 ·s −1) | Ear (μmol·m −2 ·s −1) | |||
|---|---|---|---|---|
| Net photo. | Dark resp. | Net photo. | Dark resp. | |
| DCMU culm | −1.804a | −1.945b | 3.823b | −16.690a |
| DCMU ear | 18.662b | −3.049ab | −11.446a | −13.895a |
| Control | 17.950b | −3.697a | 9.947c | −17.170a |
| Level of significance | ||||
| Genotype (G) | ns | ns | 0.028** | ns |
| Treatment (T) | 0.000*** | 0.018* | 0.000*** | ns |
| GxT | ns | ns | Ns | ns |