Table 2.
Environmental conditions in Experiment 1, 2, 3 and 4. Tmean: average daily mean temperature during the crop growth period; Tmax: average maximum daily temperature; RH: mean air relative humidity; PAR: average photosynthetically active fraction of total radiation; VPD: vapour pressure deficit. Data are means ± SE of daily values between period from sowing to 50 days after sowing and from 50 to 130 days after sowing in each experiment.
| Variables | Experiment 1 |
Experiment 2 |
Experiment 3 |
Experiment 4 |
||||
|---|---|---|---|---|---|---|---|---|
| 0-50 DAS | 51 −130 DAS | 0-50 DAS | 51 −130 DAS | 0-50 DAS | 51 −130 DAS | 0-50 DAS | 51–130 DAS | |
| Tmean (°C ± sd) | 31 ± 2 | 30 ± 2 | 24 ± 1 | 25 ± 1 | 25 ± 1 | 25 ± 1 | 26 ± 1 | 29 ± 1 |
| Tmax (°C ± sd) | 37 ± 4 | 34 ± 3 | 33 ± 3 | 35 ± 2 | 33 ± 3 | 36 ± 2 | 29 ± 2 | 33 ± 1 |
| RH (% ± sd) | 76 ± 4 | 79 ± 5 | 79 ± 3 | 79 ± 1 | 78 ± 3 | 78 ± 1 | 86.1 ± 4.7 | 80.4 ± 4.2 |
| PAR (mol m−2 d−1 ± sd) | 6.70 ± 2.25 | 5.82 ± 2.14 | 6.88 ± 1.8 | 6.7 ± 1.0 | 5.98 ± 1.8 | 7.15 ± 1.2 | 6.14 ± 1.7 | 7.38 ± 1.3 |
| VPD (kPa ± sd) | 1.07 ± 0.26 | 0.89 ± 0.27 | 0.83 ± 0.17 | 0.90 ± 0.07 | 0.83 ± 0.17 | 0.86 ± 0.08 | 0.56 ± 0.0 | 0.53 ± 0.0 |
| Number of days Tmax > 35 °C | 37 | 28 | 7 | 66 | 29 | 14 | 0 | 7 |