Iron Chlorosis in Grafted Sweet Orange (Citrus sinensis L.) Plants: Physiological and Biochemical Responses |
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| Authors: | V Chouliaras I Therios A Molassiotis G Diamantidis |
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| Institution: | (1) Department of Agriculture, Laboratory of Pomology, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece;(2) Department of Agriculture, Laboratory of Agricultural Chemistry, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece |
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| Abstract: | Fe deficiency was imposed in Citrus sinensis L. cultivars Valencia and New Hall grafted on C. aurantium and Swingle citrumelo rootstocks by the absence of Fe (-Fe) or by the presence of bicarbonate in the Hoagland nutrient solution. In Fe-deprived leaves total and active Fe concentration, and peroxidase and catalase activities were decreased while the ratios carotenoids/chlorophylls, P/Fe, and K/Ca were increased. Fe(III) chelate reductase activity was induced in (-Fe)-treated roots whereas it was depressed in bicarbonate-treated roots. |
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| Keywords: | carotenoids catalase chlorophylls Fe(III) chelate reductase peroxidase |
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