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Difference between pressure-induced sap flow rate from the petiole stub and estimated leaf transpiration rate (a) and pressure-induced sap flow rate from the de-topped root system and whole plant transpiration rate (b) plotted against the difference between leaf water potential and plant balancing pressure. Each point is a separate AC (hollow circles), RR (filled circles), not (triangles), flc (inverted triangles) and sit (filled diamonds) tomato plant.
