Translocation and retranslocation of cadmium in pea (Pisum sativum L.)
2000
Kevresan, Z.
Objective in the study was to determine the effect of cadmium (Cd) on dry matter mass, Cd translocation and retranslocation as well as the effect of this element on some biochemical and physiological processes and parameters in various phases of pea growth and development. The aphyllous pea genotype was used in this experiment and during the investigation plants were kept in water cultures subjected to semi-controlled greenhouse conditions. The results showed the reduction of dry matter mass, which was most prominent in plants treated with Cd at late phases, then in repeated treatment and with minimum reduction at early phases. Translocation from roots to aboveground plant parts and retranslocation to seed depended of the investigated Cd concentrations and the age of plants in the moment of treatment. All biochemical and physiological processes and parameters analyzed in this experiment were affected to all Cd concentrations used. Cd treatment at early phase mostly affected the intensity of respiration and water potential, while the relative water content, intensity of transpiration, stomate diffusive resistance, total proline content, nitrate-reductase activity and pigment content were more affected at later phases of Cd treatment. Results of the experimental study showed the effect of Cd on mineral elements distribution in investigated growth and developmental phases. As a results of Cd influence, the content of investigated elements decreased in whole plant and in analyzed organs.
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