Effects of salinity and drought on growth, ionic relations, compatible solutes and activation of antioxidant systems in oleander (Nerium oleander L.).

In agreement with these data, the joint statistical analysis by PCA of the ‘ion contents’ variables showed highly significant correlations with the salt treatment, in roots and leaves, positive for Na + and Cl - (which increased with increasing salinity), and negative for K + (which decreased as Na + accumulated).

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