Table 1.
The trait variation within hybrid genotypes at the end of the 2018 growing season.
| Traits | Min | Max | Mean | SDEV | CV(%) |
|---|---|---|---|---|---|
| Plant height (cm) | 98.67 | 200.67 | 147.18 | 21.38 | 14.52 |
| Stem height (cm) | 51.00 | 129.00 | 87.42 | 18.69 | 21.38 |
| Stem diameter (mm) | 3.80 | 9.73 | 6.77 | 1.20 | 17.80 |
| Tiller number | 1 | 13 | 4.13 | 2.57 | 62.21 |
| Node number | 9 | 16 | 13.05 | 1.71 | 13.09 |
| Branch number | 0 | 5 | 0.49 | 0.86 | 174.89 |
| Internode length (cm) | 4.33 | 10.50 | 7.67 | 1.21 | 15.83 |
| Leaf width (cm) | 0.97 | 1.90 | 1.36 | 0.20 | 14.81 |
| Leaf area (cm2) | 29.65 | 114.21 | 57.35 | 12.87 | 22.45 |
| Leaf base angle (°) | 9.00 | 29.00 | 17.92 | 4.47 | 24.92 |
| Biomass of individual tillers (g) | 2.38 | 28.24 | 10.63 | 4.99 | 46.92 |
| Plant biomass (g) | 3.39 | 138.61 | 31.19 | 25.00 | 80.16 |
| A (μmolCO2m-2s-1) | 9.09 | 34.18 | 19.57 | 3.69 | 18.84 |
| gs (mmolCO2m-2s-1) | 0.06 | 0.25 | 0.14 | 0.03 | 21.32 |
| Ci (μmol mol-1) | 56.79 | 181.07 | 135.16 | 19.29 | 14.27 |
| E (mmolH2Om-2s-1) | 1.73 | 7.19 | 3.99 | 0.97 | 24.39 |
| WUEe (mmol mol-1) | 3.16 | 10.39 | 5.07 | 1.16 | 22.86 |
| WUEi (μmol mol-1) | 117.08 | 192.80 | 142.78 | 12.11 | 8.48 |
A total of 333 individuals of 113 hybrid genotypes are calculated. Min and Max represent the minimum and maximum in all values of traits measured, respectively. Mean is the average value to all values of traits measured. SDEV is the abbreviation of standard deviation. CV represents the variable coefficient. A: Photosynthetic rate, gs: Stomatal conductance, Ci: Intercellular CO2 concentration, E: Transpiration rate, WUEe: extrinsic water use efficiency (A/E), WUEi: intrinsic water use efficiency (A/gs).