Sel’skokhozyaistvennaya Biologiya [Agricultural Biology], 2017, V. 52, № 4, pp. 820-829
(how to cite this article)

doi: 10.15389/agrobiology.2017.4.820eng

UDC 636.086.1:633.16:581.16:632.118.3

Acknowledgements:
The authors thank E. Kozakova, А. Kuz’menkov and Е. Makarenko for assistance in field trails. Supported by Russian Science Foundation (grant № 14-14-00666).

 

HORMESIS IN BARLEY (Hordeum vulgare L.) PLANTS DERIVED
FROM g-IRRADIATED SEEDS UNDER CONTRASTING WETHER
CONDITIONS

R.S. Churyukin, S.A. Geras’kin

All-Russian Research Institute of Radiology and Agroecology, Federal Agency of Scientific Organizations, 109 km, Kievskoe sh., Kaluzhskaya Province, Obninsk, 249032 Russia, e-mail stgeraskin@gmail.com (corresponding author)

The authors declare no conflict of interests

ORCID:

Churyukin R.S. orcid.org/0000-0002-2845-1052

Received May 5, 2017

 

Identification of mechanisms of adaptive response to weak external exposure is one of the most complex and urgent problems of the modern biology. Such reactions include the effect of hormesis which is the stimulating effect of moderate doses of stressors (e.g. the low doses of various physical and chemical agents) repeatedly confirmed at all levels of the organization of living matter. The dynamics of the growth and development of barley (Hordeum vulgare L.) plants, grown from γ-irradiated barley seeds of Nur variety, which combines high productivity potential (up to 80 c/ha), resistance to drought, good forage and brewing qualities of grain, high resistance to lodging and serious diseases, was studied in a field trial. It was shown that irradiation of seeds significantly influenced the development of plants throughout the vegetative period. The duration of the initial stages of ontogenesis was shortened, and the phase of full ripeness came on 5-7 days earlier than in the control. The length of the stems, the weight of 1000 grains, the number of grains per ear, the number of productive stems, the weight of straw and ears increased. The dependence of economically valuable traits on the dose of γg-irradiation of seeds was statistically significantly better described by models that take into account the effect of hormesis. The manifestation of the effect of presowing γ-irradiation was different in the years with contrasting weather conditions. In the dry year of 2014, the increase in yield was determined by the increase in the number of productive stems, and under optimal conditions in 2015, this was due to the increase in the number of grains per ear. In 2016, an increase in the amount of precipitation by 2.5 times relative to the climatic norm leveled the stimulating effects. The results obtained in this study indicate that presowing γ-irradiation of seeds notably affects the development of barley plants throughout the growing season, significantly changing the structure of the crop. In the plants from the seeds irradiated at stimulating doses, the manifestation of economically valuable traits was statistically significantly increased when vegetation seasons were contrasting in weather conditions. Realization of the effect of hormesis specifically depends on the conditions in which the plants developed.

Keywords:barley, gamma irradiation, seeds, hormesis, growth and development stimulation, yield.

 

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REFERENCES

  1. Calabrese E.J., Baldwin L.A. Radiation hormesis: its historical foundations as a biological hypothesis. Human& Experimental Toxicology, 2000, 19: 41-75 CrossRef
  2. Gressel J., Dodds J. Commentary: Hormesis can be used in enhancing plant productivity and health; but not as previously envisaged. Plant Sci., 2013, 213: 123-127 CrossRef
  3. Belz R.G., Duke S.O. Herbicides and plant hormesis. Pest Management Science, 2014, 70: 698-707 CrossRef
  4. Volkova P.Yu., Churyukin R.S., Geras'kin S.A. Radiatsionnaya biologiya. Radioekologiya, 2016, 56(2): 1-7 CrossRef (in Russ.).
  5. Kurobane I., Yamagughi H. The effects of gamma irradiation on the production and secretion of enzymes, and on enzyme activities in barley seeds. Environmental and Experimental Botany, 1979, 19: 75-84 CrossRef
  6. Aksenova N.P. Fiziologiya rastenii, 2013, 60(3): 307-319 (in Russ.).
  7. Okamoto H., Tatara A. Effect of low dose γ-irradiation on the cell cycle duration of barley roots. Environmental and Experimental Botany, 1995, 35(3): 73-88 CrossRef.
  8. Gudkov I.N. Osnovy obshchei i sel'skokhozyaistvennoi radiobiologii [Basic general and agricultural radiology]. Kiev, 1991 (in Russ.).
  9. Gudkov I.N. V sbornike: Sel'skokhozyaistvennaya radiobiologiya [In: Agricultural radiology]. Kishinev, 1989: 49-56 (in Russ.).
  10. Dospekhov B.A. Metodika polevogo eksperimenta [Methods of field trials]. Moscow, 1985 (in Russ.).
  11. Geras'kin S.A., Churyukin R.S., Kazakova E.A. Radiatsionnaya biologiya. Radioekologiya, 2015, 55(5): 607-615 CrossRef (in Russ.).
  12. Geraskin S., Churyukin R., Volkova P. Radiation exposure of barley seeds can modify the early stages of plants’ development. Journal of Environmental Radioactivity, 2017, 177: 71-83 CrossRef
  13. Belz R.G., Cedegreen N. Parthenin hormesis in plants depends on growth conditions. Environmental and Experimental Botany, 2010, 69: 293-301 CrossRef
  14. Gidromettsentr Rossii. Federal'naya sluzhba po gidrometeorologii i monitoringu okruzhayushchei sredy. [Federal Service for Hydrometeorology and Environmental Monitoring of Russia]. Available http://meteoinfo.ru/climate/klimatgorod/1695-1246618396. No date (in Russ.).
  15. Cedergreen N., Ritz C., Streibig J.C. Improved empirical models describing hormesis. Environmental Toxicology and Chemistry, 2007, 24(12): 3166-3172 CrossRef
  16. Levin V.I. Agroekologicheskie aspekty predposevnoi obrabotki semyan sel'skokhozyaistvennykh kul'tur gamma-luchami [Agroecological aspects of pre-sowing g-irradiation of seeds of cultivated crops]. Moscow, 2000 (in Russ.).
  17. Kuzin A.M. Stimuliruyushchee deistvie ioniziruyushchego izlucheniya na biologicheskie protsessy (k probleme biologicheskogo deistviya malykh doz) [Biostimulating effects of low-dose ionizing radiation]. Moscow, 1977 (in Russ.).
  18. Berezina N.M. Predposevnoe obluchenie semyan sel'skokhozyaistvennykh rastenii [Pre-sowing irradiation of seeds in cultivated crops]. Moscow, 1964 (in Russ.).
  19. Arisnabarreta S., Miralles D.J. Radiation effects on potential number of grains per spike and biomass partitioning in two- and six-rowed near isogenic barley lines. Field Crops Research, 2008, 107(3): 203-210 CrossRef
  20. Zheleznov A.V., Zheleznova N.B., Kukoeva T.V. Variability of barley (Hordeum vulgareL.) of different geographic origin by the lements of yield structure. Sel’skokhozyaistvennaya biologiya [Agricultural Biology], 2012, 1: 33-40 CrossRef (in Russ.).
  21. Konovalov Yu.B. Formirovanie produktivnosti kolosa yarovoi pshenitsy i yachmenya [Ear formation in spring wheat and barley]. Moscow, 1981 (in Russ.).
  22. Shatilov N.S., Vaulin A.V. Izvestiya TSKhA, 1972, 1: 35-40 (in Russ.).
  23. Ray D.P., Gerber J.S., MacDonald G.M., West P.C. Climate variation explains a third of global crop yield variability. Nature communications, 2014, 1: 1-9 CrossRef
  24. Sheppard S.C., Hawkins J.L. Radiation hormesis of seedlings and seeds, simply elusive or an artifact? Environmental and Experimental Botany, 1990, 30: 17-25 CrossRef
  25. Gringof I.G. Kleshchenko A.D. Osnovy sel'skokhozyaistvennoi meteorologii [Basic agricultural meteorology]. Obninsk, 2011 (in Russ.).
  26. Mozhaev N.I., Serikpaev N.A., Stybaev G.Zh. Programmirovanie urozhaev sel'skokhozyaistvennykh kul'tur [Yield programming in cultivated crops]. Astana, 2013 (in Russ.).
  27. Hodge A., Berta G., Doussan C., Merchan F., Crespi M. Plant root growth, architecture and function. Plant Soil, 2009, 321: 153-187 CrossRef
  28. Melki M., Marouani A. Effects of gamma rays irradiation on seed germination and growth of hard wheat. Environmental Chemistry Letters, 2010, 8: 307-310 CrossRef
  29. Plishchenko V.M., Golub' A.S. AgroXXI, 2009, 1-3: 40-42 (in Russ.)

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