[Cytogenetic effects in experimental exposure to the heavy charged particles of galactic cosmic radiation on the Kosmos-1129 biosatellite].
The experiment was carried out on lattice (Lactuca sativa) seeds flown in a biocontainer equipped with plastic detectors to record heavy charged particles (HCP). The purpose of the experiment was to determine the yield of aberrant cells as a result of irradiation, and to identify this effect as a function of HCP topography in the seed. The cytogenetic examination of flight seedlings revealed a significant difference between the seeds which were hit with HCP and those that remained intact. This indicates a significant contribution of the heavy component of galactic cosmic rediation into the radiobiological effect. The relationship between the radiobiological effect and the HCP topography in the seed was established: zones of the root and stem meristema proved to be most sensitive targets.
D002869:Chromosome Aberrations; D003359:Cosmic Radiation / Q000009:adverse effects*; D010945:Plants, Edible / Q000528:radiation effects; D011836:Radiation Tolerance; D012639:Seeds / Q000528:radiation effects; D013026:Space Flight; D014586:USSR
Tsitogeneticheskie éffekty pri vozdeĭstvii tiazhelykh zariazhennykh chastits galakticheskogo kosmicheskogo izlucheniia v éksperimente na biosputnike "Kosmos-1129".