For the exudate collection,the excised roots were maintained in
a fresh standard nutrient solution without PEG to measure water
and K+ transport. Again, both cultivars showed different behaviour.
The roots of Olimpia subjected to water stress using PEG showed
higher water and K+ transport than the roots of the control plants.
In contrast, this water stress treatment did not affect the water or
K
+
transport in the excised roots of Jazzy (
Fig. 4
). In addition, PEG
did not have a signi
fi
cant effect on the total xylem solute
concentration (mM) in Olimpia, i.e., 15.15
1.00 (control) vs.
16.25
0.92(PEG).Theseresultssupportthoseobtainedinthe
fi
rst
experiment.
For the exudate collection,the excised roots were maintained ina fresh standard nutrient solution without PEG to measure waterand K+ transport. Again, both cultivars showed different behaviour.The roots of Olimpia subjected to water stress using PEG showedhigher water and K+ transport than the roots of the control plants.In contrast, this water stress treatment did not affect the water orK+transport in the excised roots of Jazzy (Fig. 4). In addition, PEGdid not have a significant effect on the total xylem soluteconcentration (mM) in Olimpia, i.e., 15.151.00 (control) vs.16.250.92(PEG).Theseresultssupportthoseobtainedinthefirstexperiment.
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