Modifying effect of dynamic space flight factors on radiation damage of air-dry seeds of Crepis capillaris (L) Wallr

The influence of dynamic factors (vibration and linear acceleration) on the rate of chromosome aberrations in Crepis capillaris was studied. The vibrational process simulated was similar in its characteristics to that occurring at the launch of spaceships. In combination with linear acceleration it...

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Bibliographic Details
Published inLife sciences and space research Vol. 13; p. 167
Main Authors Vaulina, E N, Kostina, L N
Format Journal Article
LanguageEnglish
Published Netherlands 1975
Subjects
Acceleration
Chromosome Aberrations
Crepis - genetics
Crepis - physiology
Crepis - radiation effects
Dose-Response Relationship, Radiation
Gamma Rays
Meristem - genetics
Meristem - physiology
Meristem - radiation effects
Mutation
Plant Shoots - genetics
Plant Shoots - physiology
Plant Shoots - radiation effects
Seeds - genetics
Seeds - physiology
Seeds - radiation effects
Space Flight
Vibration
Weightlessness
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Summary:The influence of dynamic factors (vibration and linear acceleration) on the rate of chromosome aberrations in Crepis capillaris was studied. The vibrational process simulated was similar in its characteristics to that occurring at the launch of spaceships. In combination with linear acceleration it caused a statistically significant increase in the rate of chromosome aberrations compared with the control (R=7.70). The dynamic factors modified the effect of radiation damage induced by acute gamma-irradiation (3 krad). Pre-radiation treatment with vibration and acceleration on the seeds caused a significant decrease (R=10.23) of the effect of radiation damage, from 15.57% to 9.74%. The post-radiation treatment of C. capillaris seeds with the dynamic factors did not change the rate of chromosome aberrations significantly (from 15.57% to 15.90%).
ISSN:0075-9422