[Effect of single exposure of the seeds of Lactuca sativa to heavy ions of galactic cosmic radiation at orbital manned space stations "Saliut-6" and "Saliut-7"].
This paper presents the results of measuring single heavy ions (HI) of galactic cosmic rays during 40- to 457-day flights of manned orbital stations Salyut-6 and Salyut-7. Cytogenetic analysis of Lactuca sativa seeds showed a significant increase of aberrant cells and cells with multiple chromosome aberrations in seeds hit with HI compared to non-hit++ seeds during flights of 123 to 457 days in duration. There was a good correlation between curves showing aberrant cells as a function of flight of the dose absorbed, viz. 16.0 to 63.4 mGy. These findings suggest a high biological effectiveness of heavy ions of galactic cosmic rays.
Nevzgodina
L V
LV
Maksimova
E N
EN
Kaminskaia
E V
EV
D002869:Chromosome Aberrations / Q000235:genetics*; D003359:Cosmic Radiation / Q000009:adverse effects; D012639:Seeds / Q000235:genetics / Q000528:radiation effects* / Q000648:ultrastructure; D013026:Space Flight; D013997:Time Factors; D014586:USSR; D014675:Vegetables / Q000235:genetics / Q000528:radiation effects* / Q000648:ultrastructure
Vliianie odinochnykh popadaniĭ tiazhelykh ionov galakticheskikh kosmicheskikh lucheĭ na semena Lactuca sativa, eksponirovannye na orbita'lnykh pilotiruemykh stantsiiakh "Saliut-6" i "Saliut-7".