Table 2.
Average water consumption during the plant growth period
| Treatments | WW |
RW |
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| Experiments | I |
II |
Average I & II |
Average I & II |
I (Severe) |
II (Mild) |
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| Traits | Excalibur | Kukri | RAC875 | Excalibur | Kukri | RAC875 | Excalibur | Kukri | RAC875 | Excalibur | Kukri | RAC875 | Excalibur | Kukri | RAC875 | Excalibur | Kukri | RAC875 |
| Water use before stress (l pot−1) | 2.9±0.2 | 2.8±0.3 | 2.8±0.3 | 4.5±0.4 | 3.4±0.1 | 3.8±0.1 | 3.7±0.5 | 3.1±0.4 | 3.3±0.2 | 4.5±0.2 | 3±0.1 | 3.2±0.2 | 3±0.2 | 2.8±0.2 | 3.1±0.3 | 5.1±0.2 | 3.2±0.1 | 3.3±0.1 |
| Water use during stress (l pot−1) | 13±0.3 | 12.4±0.1 | 11.5±0.3 | 12.0±0.3 | 13.6±0.4 | 11.3±0.5 | 12.5±0.5 | 13±0.5 | 11.4±0.7 | 7.5±0.3 | 6.1±0.3 | 6.0±0.3 | 7.1±0 | 5.8±0.2 | 6.0±0.3 | 7.0±0.2 | 6.4±0.1 | 6.0±0.1 |
| Total water used (l pot−1) | 15.9±0.5 | 15.1±0.4 | 14.3±0.5 | 16.5±0.6 | 17±0.5 | 15.1±0.6 | 16.2±0.4 | 16.1±0.4 | 14.7±0.6 | 11.2±0.3 | 9.1±0.3 | 9.2±0.5 | 10.3±0.2 | 8.6±0.2 | 9.1±0.5 | 12.1±0.4 | 9.6±0.1 | 9.3±0.1 |
| WUEa (g l−1 pot−1) | 3.8±0.1 | 4.2±0.1 | 4.2±0.1 | 5.3±0.2 | 6.3±0.1 | 7.2±0.6 | 4.5±0.3 | 5.3±0.4 | 5.7±0.6 | 4.6±0.5 | 5.1±0.5 | 5.1±0.5 | 3.3±0.1 | 3.7±0.2 | 3.8±0.2 | 5.5±0.2 | 6.4±0 | 6.4±0.1 |
Total amount of water applied to each pot during the plant growth before and during the water stress imposition and the estimated water use efficiency (WUE) are given (each value represents the mean ±SE).
a
WUE=Total biomass (g)/total water consumed (l).