Table 2.
Broad sense heritability (H2) of the main hydraulic traits (abbreviations as in Table 1) and leaf area (LA) measured on the Syrah×Grenache mapping population under the well-watered (WW) or water deficit (WD) scenario
| Trait | Scenario | H2 (2012) | H2 (2013) | H2 (12+13) |
|---|---|---|---|---|
| Tr | All | – | 0.652 | 0.717 |
| WD | 0.544 | 0.6 | 0.616 | |
| WW | 0.476 | 0.494 | 0.519 | |
| TrS | All | 0.677 | – | 0.788 |
| WD | 0.546 | 0.572 | 0.676 | |
| WW | 0.548 | 0.442 | 0.662 | |
| K | All | – | 0.55 | 0.618 |
| WD | 0.432 | 0.549 | 0.54 | |
| WW | 0.459 | 0.395 | 0.4 | |
| KS | All | 0.53 | – | 0.725 |
| WD | 0.58 | 0.534 | 0.65 | |
| WW | 0.41 | 0.297 | 0.465 | |
| ΨM | All | 0.486 | – | 0.67 |
| WD | 0.6 | 0.538 | 0.625 | |
| WW | ~0 | 0.232 | ~0 | |
| ∆Ψ | All | – | – | 0.66 |
| WD | 0.59 | 0.53 | 0.612 | |
| WW | ~0 | 0.223 | ~0 | |
| LA | All | 0.672 | 0.755 | 0.823 |
| Red_ΨM | WD – WW | – | – | 0.344 |
| Red_TrS | WD / WW | – | – | 0.292 |
| Red_KS | WD / WW | – | – | 0.299 |
Heritability was calculated from genotypic and residual variances obtained by fitting mixed linear models, respectively, for the WW and WD scenarios, and for the multiscenario data sets (‘all’) when genotype×scenario interaction was significant.