Transfer of Cs-137 into onion (Allium cepa L.) under conditions of hydroponic model experiment

Godyaeva, M.M.; Paramonova, T.A.; Kuzmenkova, N.V.

Авторы: Godyaeva M.M., Paramonova T.A., Kuzmenkova N.V.
Журнал: IOP Conference Series: Materials Science and Engineering
Том: 487
Номер: 1
Год издания: 2019
Издательство: -
Местоположение издательства: Krakow
Первая страница: 1
Последняя страница: 8
DOI: 10.1088/1757-899X/487/1/012015
Аннотация: Short-term hydroponic experiment was conducted to evaluate intensity of the 137Cs transfer from a solution with extremely high activity of the radionuclide into onion, considering different plant's compartments (green leaves, bulbs, roots). It has been revealed that the root uptake of 137Cs was significantly discriminated, and not exceeded 0.01% of the total amount of radionuclide contained in the solution. At the same time, biometric indices of the plants – shoot height, roots elongation, phytomass inventory and structure – under conditions of 137Cs stress exposure were not significantly changed in comparison with the control. The main accumulation of 137Cs, which incorporated into onion, occurred in roots, especially in root tips, which are most actively involved in the processes of mass exchange between the plant and the external environment. The translocation of 137Cs into the shoot part, including the onion bulb and green leaves, was significantly suppressed, which allows considering the root system of onion as a biological barrier providing the rhizofiltration of the toxicant.
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Transfer of Cs-137 into onion (Allium cepa L.) under conditions of hydroponic model experimentстатья

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