| NUKLEONIKA 2012, 57(3):421-426
SEARCH OF RADIATION HORMESIS IN PLANTS: IRRADIATION
OF THE CRESS (Lepidium sativum L.)
Krzysztof W. Fornalski1,2, Łukasz Adamowski1, Tomasz W. Turowski3,
Jerzy Wojnarowicz1
1 National Centre for Nuclear Research (NCBJ),
7 Andrzeja Sołtana Str., 05-400 Otwock/Świerk, Poland
2 PGE Nuclear Energy, 49 Mokotowska Str., 00-542 Warsaw, Poland
3 Faculty of Chemistry, Warsaw University of Technology,
3 Noakowskiego Str., 00-664 Warsaw, Poland
The paper is composed of two parts: a review of a group of experiments among irradiated plants and own search for radiation hormesis in a single experiment. In the first part the Bayesian analysis of the hormetic-like data published so far shows that the NOAEL (no observed adverse effect level) point, above which adverse effects appear, may be located between 30 and 100 Gy. In the second part the influence of low doses of ionizing radiation was tested on the particularly fast growing plant, namely the cress (Lepidium sativum L.). Two experimental scenarios were used: in the first one the cress was irradiated during the growth (maximal dose 2.3 Gy), while in the second scenario dry seeds were irradiated (maximal dose 100 Gy). The experiment indicates that the NOAEL point lies above 100 Gy and statistically insignificant hormetic effect can be seen between 0.1 and 14 Gy. No linear reaction is observed in the full range of doses.
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