Table 1.
Mean values of stable carbon isotope composition in mature grains (δ13Cgrain), total grain weight per ear (GWear), the number of grains per ear (NGear) and thousand kernel weight (TKW) in control, DCMU-culm (inhibition of the whole culm photosynthesis) and DCMU-ear (inhibition of ear photosynthesis) plants
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.
| Treatment | δ 13 C grain (‰) | NG ear | GW ear (g) | TKW (g) |
|---|---|---|---|---|
| DCMU culm | −26.0b | 65.7a | 1.29a | 19.8a |
| DCMU ear | −26.7a | 62.7a | 1.99b | 31.6b |
| control | −26.3b | 65.5a | 2.89c | 44.3c |
| Level of significance | ||||
| Genotype (G) | 0.000*** | ns | 0.000*** | 0.009*** |
| Treatment (T) | 0.008** | 0.000*** | 0.009** | 0.000*** |
| G×T | ns | ns | ns | ns |