Cytogenetic effect of low dose γ-radiation in Hordeum vulgare seedlings: non-linear dose–effect relationship

  • Stanislav A. Geras’kin
  • Alla A. Oudalova
  • Jin Kyu Kim
  • Vladimir G. Dikarev
  • Nina S. Dikareva
Original Paper


The induction of chromosome aberrations in Hordeum vulgare germinated seeds was studied after ionizing irradiation with doses in the range of 10–1,000 mGy. The relationship between the frequency of aberrant cells and the absorbed dose was found to be nonlinear. A dose-independent plateau in the dose range from about 50 to 500 mGy was observed, where the level of cytogenetic damage was significantly different from the spontaneous level. The comparison of the goodness of the experimental data fitting with mathematical models of different complexity, using the most common quantitative criteria, demonstrated the advantage of a piecewise linear model over linear and polynomial models in approximating the frequency of cytogenetical disturbances. The results of the study support the hypothesis of indirect mechanisms of mutagenesis induced by low doses. Fundamental and applied implications of these findings are discussed.


Chromosome Aberration Bystander Effect Root Meristem Cell Piecewise Linear Model Primary Damage 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



The authors are very grateful to Dr. David Copplestone, Environment Agency, Warrington, UK, for critical reading of the manuscript and help in improving the English of the paper. The paper includes findings from studies supported by the Korea-Russia Scientist Exchange Program of the Ministry of Science and Technology of Korea, ISTC Project No 3003, INTAS Project No 04-83-2796.


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Copyright information

© Springer-Verlag 2006

Authors and Affiliations

  • Stanislav A. Geras’kin
    • 1
  • Alla A. Oudalova
    • 1
  • Jin Kyu Kim
    • 2
  • Vladimir G. Dikarev
    • 1
  • Nina S. Dikareva
    • 1
  1. 1.Russian Institute of Agricultural Radiology and AgroecologyObninskRussia
  2. 2.Korea Atomic Energy Research InstituteDaejeonSouth Korea

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