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Título

Effects of branch solid Fe sulphate implants on xylem sap composition in field-grown peach and pear: changes in Fe, organic anions and pH

Autor Larbi, Ajmi ; Morales Iribas, Fermín ; Abadía Bayona, Javier ; Abadía Bayona, Anunciación
Palabras clave Iron chlorosis
Xylem sap
Peach
Pear
Iron deficiency
Fecha de publicación dic-2003
EditorElsevier
Citación Journal of Plant Physiology 160 (12): 1473-1481 (2003)
ResumenThe effects of placing solid implants containing Fe sulfate in branches of Fe-deficient pear and peach trees on the composition of the xylem sap have been studied. Iron sulfate implants are commercially used in northeastern Spain to control iron chlorosis in fruit trees. Implants increased Fe concentrations and decreased organic acid concentrations in the xylem sap, whereas xylem sap pH was only moderately changed. The citrate to Fe ratios decreased markedly after implants, therefore improving the possibility that Fe could be reduced by the leaf plasma membrane enzyme reductase, known to be inhibited by high citrate/Fe ratios. In peach, the effects of the implants could be observed many months post treatment. In pear, some effects were still observed one year after the implants had taken place. Results obtained indicate that solid Fe sulfate implants were capable of significantly changing the chemical composition of the xylem sap in fruit trees.
Versión del editorhttp://dx.doi.org/10.1078/0176-1617-01010
URI http://hdl.handle.net/10261/99328
DOI10.1078/0176-1617-01010
Identificadoresdoi: 10.1078/0176-1617-01010
issn: 0176-1617
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