TABLE 1.
Significance of the factor effects in the two-way ANOVAs carried out for water relations and gas exchange parameters assessed in the Tempranillo cv. vines grafted onto M1, M4, and 1103-Paulsen rootstocks.
| Type of parameter | Parameter | Factors |
Interaction | |
| Rootstock | Water Quality | R × WQ | ||
| Water relations | Ψpre–dawn | 0.33 | <0.001 | 0.44 |
| Ψstem | 0.06 | <0.001 | 0.62 | |
| Ψleaf | 0.10 | 0.19 | 0.97 | |
| Ψπ | 0.60 | 0.03 | 0.46 | |
| Ψp | 0.25 | 0.37 | 0.88 | |
| Ψπ 100 | 0.29 | 0.02 | 0.86 | |
| Gas exchange | AN | <0.01 | <0.001 | 0.17 |
| g s | 0.23 | 0.02 | 0.37 | |
| WUEi | 0.25 | 0.07 | 0.67 | |
Ψpre–dawn, pre-dawn leaf water potential; Ψstem, midday stem water potential; Ψleaf, midday leaf water potential; Ψπ, leaf osmotic potential; Ψp, leaf turgor potential; Ψπ 100, leaf osmotic potential at full turgor; AN, net photosynthesis; gs, stomatal conductance; WUEi, intrinsic water use efficiency. Significance of effects in bold denotes statistically significant differences at p < 0.05.