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Physiological effects of boron manganese interaction in tomato lycopersicon esculentum cultivar marglobe plants 3. absorption and distribution of manganese zinc and copper



Physiological effects of boron manganese interaction in tomato lycopersicon esculentum cultivar marglobe plants 3. absorption and distribution of manganese zinc and copper



Anales de Edafologia y Agrobiologia 38(5-6): 1013-1030



The absorption and distribution of Mn, Zn and Cu in tomatoes (var. Marglobe), grown hydroponically in a greenhouse, were studied, using a factorial design with different levels of B and Mn (from deficiency to toxicity). Mn amount accumulated by plants was readily redistributed under deficiency conditions. The influence of B concentration in nutritive solution on Mn absorption seemed to be an indirect consequence of its effect on growth; the amount of Mn translocated to the shoot was independent of growth and B concentration in solution. Deficient or toxic B and Mn supplies resulted in a lowered Zn absorption, especially under toxic levels. In respect to Zn translocation, B excess in the nutritive solution favored Zn translocation to the shoot; Mn excess resulted in a Zn retention in roots, this organ reaching a Zn concentration considered toxic. Cu absorption was independent of B and Mn levels in solution; its translocation was affected by the supply of both microelements in a similar way as Zn distribution was.

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Accession: 006118297

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