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Hydrobiological Journal
SJR: 0.227 SNIP: 0.901 CiteScore™: 0.5

ISSN Imprimer: 0018-8166
ISSN En ligne: 1943-5991

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Hydrobiological Journal

DOI: 10.1615/HydrobJ.v50.i5.80
pages 78-88

Effect of Rest Period on Germination of the Common Reed Seeds from the Water Bodies of the Chornobyl Exclusion Zone

N. L. Shevtsova
Institute of Hydrobiology National Academy of Sciences of Ukraine Kiev, Ukraine
A.A. Yavniuk
Institute of Hydrobiology National Academy of Sciences of Ukraine Kyiv, Ukraine
D. I. Gudkov
Institute of Hydrobiology, National Academy of Sciences of Ukraine, Kyiv

RÉSUMÉ

Effects of chronic irradiation by low doses of ionizing radiation on viability of the common reed Phragmites australis (Poacea) from the water bodies of the Chornobyl exclusion zone were studied. Indexes of germinating capacity, germinative energy, viability of seedlings and survival rate of seeds depending on radiation dose were determined. Effect of the "rest period" was revealed, that is increase on average by 20−25% of germinating capacity and viability of seedlings of the plants, growing under the chronic irradiation, after 6−7 months of rest under absence of irradiation. Reliable correlation was stated between physiological state of the reed seeds and absorbed dose rate of the parental plant.


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