Table 1.
List of traits considered for testing relationships with spectral indices.
| Trait group | Trait name | Abbreviation |
|---|---|---|
| Dry matter (DM) [kg DM ha–1] |
Total DM at anthesis | DM Ant |
| Leaves DM at anthesis | DM leaves Ant | |
| Culms DM at anthesis | DM culms Ant | |
| Spikes DM at anthesis | DM spikes Ant | |
| Total DM at maturity | DM Mat | |
| Leaves DM at maturity | DM leaves Mat | |
| Culms DM at maturity | DM culms Mat | |
| Chaff DM at maturity | DM chaff Mat | |
| Grain DM at maturity (grain yield [GY]) |
DM grain Mat | |
| N concentration (NC) [%] |
Leaves NC at anthesis | NC leaves Ant |
| Culms NC at anthesis | NC culms Ant | |
| Spikes NC at anthesis | NC spikes Ant | |
| Leaves NC at maturity | NC leaves Mat | |
| Culms NC at maturity | NC culms Mat | |
| Chaff NC at maturity | NC chaff Mat | |
| Grain NC at maturity (GNC) | NC grain Mat | |
| Nitrogen uptake (Nup) (kg N ha–1) | Total Nup at anthesis | Nup Ant |
| Leaves Nup at anthesis | Nup leaves Ant | |
| Culms Nup at anthesis | Nup culms Ant | |
| Spikes Nup at anthesis | Nup spikes Ant | |
| Total Nup at maturity | Nup Mat | |
| Leaves Nup at maturity | Nup leaves Mat | |
| Culms Nup at maturity | Nup culms Mat | |
| Chaff Nup at maturity | Nup chaff Mat | |
| Grain Nup at maturity (GNup) | Nup grain Mat | |
| Straw Nup at maturity | Nup straw Mat | |
| derived DM traits |
Spike density | spike density |
| Grain number per spike | GNS | |
| Thousand kernel weight | TKW | |
| DM translocation efficiency | DMTEff | |
| DM translocation | DMT | |
| Post-anthesis assimilation | PAA | |
| Contribution of post-anthesis assimilation to grain filling | CPAA | |
| Total N utilization efficiency | NutEff_total | |
| Harvest index | HI | |
| Grain N utilization efficiency | NutEff_grain | |
| derived N traits | Contribution of post-anthesis N uptake to total N uptake | CPNup |
| N harvest index | NHI | |
| Total N translocation | NT | |
| Leaves N translocation | NT leaves | |
| Culms N translocation | NT culms | |
| Spikes N translocation | NT spikes | |
| N translocation efficiency | NTEff | |
| Post anthesis N uptake | PANup | |
| other | Flowering days in June | flowering |