Ядерна фізика та енергетика Nuclear Physics and Atomic Energy   ISSN: 1818-331X (Print), 2074-0565 (Online)   Publisher: Institute for Nuclear Research of the National Academy of Sciences of Ukraine   Languages: Ukrainian, English   Periodicity: 4 times per year   Open access peer reviewed journal

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I. Zhuk^*, J. Shylina

Institute of Cell Biology and Genetic Engineering, National Academy of Sciences of Ukraine, Kyiv, Ukraine

^*Corresponding author. E-mail address: ivzhukvi@gmail.com

Abstract: The effect of low-dose X-ray irradiation (10 and 20 Gy) of winter wheat seeds of the cultivars Sofiia Kyivska and Shchedrivka Kyivska on plant resistance to phytopathogenic pressure was investigated. Seed infestation by the phytopathogens Fusarium sp., Aspergillus, and Mucor was identified. It is shown that in both cultivars, both irradiation doses suppressed the development of phytopathogens; however, the 20 Gy dose had a more pronounced effect on infection development. Changes in the hydrogen peroxide content during the experimental period were also sensitive to phytopathogenic pressure and to the cultivar-specific adaptive potential of the plants. Changes in the contents of chlorophylls and carotenoids indicate the functional integrity of leaves following exposure of wheat grains to low doses of X-ray radiation and the compensation of the detrimental effects of the Fusarium pathogen on the photosynthetic apparatus of plants.

Keywords: wheat, X-rays, photosynthetic pigments, hydrogen peroxide, Fusarium, Mucor, Aspergillus.

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