The action of space flight factors on the radiation effects of additional gamma-irradiation of seeds

The action of space flight factors (SFF) on radiosensitivity and the effects of preflight irradiation of air-dried Crepis capillaris (L) Wallr and Arabidopsis thaliana (L) Heynh seeds aboard the spaceships of the Cosmos, Soyuz and Salyut series was studied. The results have shown that vibration and...

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Bibliographic Details
Published inLife sciences and space research Vol. 17; p. 133
Main Authors Anikeeva, I D, Vaulina, E N, Kostina, L N
Format Journal Article
LanguageEnglish
Published Netherlands 1979
Subjects
Acceleration
Arabidopsis - genetics
Arabidopsis - growth & development
Arabidopsis - radiation effects
Chromosome Aberrations
Crepis - genetics
Crepis - growth & development
Crepis - radiation effects
Gamma Rays
Germination
Mutation
Radiation Tolerance
Seeds - genetics
Seeds - growth & development
Seeds - radiation effects
Space Flight
Vibration
Weightlessness
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Summary:The action of space flight factors (SFF) on radiosensitivity and the effects of preflight irradiation of air-dried Crepis capillaris (L) Wallr and Arabidopsis thaliana (L) Heynh seeds aboard the spaceships of the Cosmos, Soyuz and Salyut series was studied. The results have shown that vibration and linear acceleration (VA) cause damage of the meristematic embryonic cells and simultaneously decrease the radiosensitivity of seeds. SFF enhance the effect of preflight gamma-irradiation of seeds with respect to a number of characteristics. This can be explained partly by the action of VA. The basis of all observed effects is chromosomal aberrations which are expressed in a series of successive cell divisions and which decrease the survival and fertility of plants that grow from flight-exposed seeds.
ISSN:0075-9422