Supplementary Figure legends
Figure S1 . Abscisic acid (ABA) concentrations in root xylem sap of tomato cv Ailsa Craig self-grafted (AC/AC) and grafted onto the NCED OE line SP12 (AC/SP12) (38- days old), cultivated hydroponically under control and salt conditions (100 mM NaCl) for 21 days. * indicates a significant difference between AC/AC and AC/SP12 within each treatment according to the Tukey test (P ≤ 0.05).