Abstract—Seeds of lettuce Lactuca sativa L. were irradiated with neutrons with an average energy of 1.6 MeV at a dose of 10 Gy. Irradiation was performed at the end of the limiting time for preserving the conditioned freshness of seeds. The seeds were germinated in a hypomagnetic chamber at a magnetic induction of 1 ×103, 1.4 × 102, and 2 × 101 nT, which corresponded to the reduction of the geomagnetic field by 5 × 101, 3.6 × 102 , and up to 2.5 × 103 times, as well as at laboratory conditions (5 × 101 μT). After germinating at hypomagnetic conditions, the percentage of cells with chromosomal aberrations in the root meristem of seedlings grown from irradiated seeds increased at all the considered values of the reduced geomagnetic field. The synergistic effect of factors according to the criterion of cells with chromosomal aberrations and the antagonistic interaction according to the average number of dividing cells at the stages of ana-telophase was noted.
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ACKNOWLEDGMENTS
The authors express their gratitude to J. K. Pálfalvi (Hungarian Academy of Sciences, Centre for Energy Research (MTAEK), Budapest, Hungary) for their help and the irradiation of seeds.
Funding
The work was carried out with the support of the Fundamental Research program IMBP RAS; the equipment was purchased by the Moscow State University Research Institute of Nuclear Physics at the expense of the Moscow University Development Program.
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The authors declare that they have no conflict of interest. This paper does not contain a description of studies using humans and animals as objects.
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Translated by E. Puchkov
Abbreviations: HMC, hypomagnetic conditions; GMF, geomagnetic field; RBE, relative biological efficiency.
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Platova, N.G., Lebedev, V.M., Spassky, A.V. et al. Cytogenetic Effects in the Root Meristem Cells of Lettuce Seedlings after Fast Neutron Irradiation (10 Gy) of Seeds and their Modification by Hypomagnetic Conditions during Germination. BIOPHYSICS 66, 998–1003 (2021). https://doi.org/10.1134/S0006350921060142
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DOI: https://doi.org/10.1134/S0006350921060142