title: Modifying effect of dynamic space flight factors on radiation damage of air-dry seeds of Crepis capillaris (L) Wallr.
abstract: 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%).
authors.affiliation: Academy of Sciences of the USSR, Moscow, USSR.
authors.forename: E N
authors.initials: EN
authors.lastname: Vaulina
authors.forename: L N
authors.initials: LN
authors.lastname: Kostina
mesh_terms: D000054:Acceleration; D002869:Chromosome Aberrations; D027468:Crepis / Q000235:genetics / Q000502:physiology / Q000528:radiation effects*; D004307:Dose-Response Relationship, Radiation; D005720:Gamma Rays; D018519:Meristem / Q000235:genetics / Q000502:physiology / Q000528:radiation effects; D009154:Mutation; D018520:Plant Shoots / Q000235:genetics / Q000502:physiology / Q000528:radiation effects; D012639:Seeds / Q000235:genetics / Q000502:physiology / Q000528:radiation effects; D013026:Space Flight; D014732:Vibration; D014893:Weightlessness