AbstractIn a study of the biological effects of cosmic HZE particles, lettuce (Lactuca sativa) seeds were flown on the orbital stations Salyut 6 and 7 for varying periods of time (from 40 to 457 days). The dependence of the biological damage on flight duration, physical parameters and the fact of passage of an HZE particle through the seed was estimated using the criterion of the frequency of aberrant cells. The arrangement of the flight biological container Biobloc made it possible to trace the location of tracks of individual HZE particles with Z⩾6 and LET 200 keV/um. In seeds hit by HZE particles, for all exposure times, a statistically significant much higher yield of aberrant cells and also of cells containing multiple chromosome aberrations was observed than in the control material. The frequency of aberrant cells is markedly higher (by a factor of 1,5) in seeds hit than in non-hit ones. The changes of the yield of aberrant cells as a function of the absorbed dose (3.2–63.4 mGy) and the fluence (4.8–44.2 particles/cm2) are linear for the exposure duration ranging from 40 to 457 days.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Effects of prolonged exposure of lettuce seeds to HZE particles on orbital stations


    Beteiligte:

    Erschienen in:

    Erscheinungsdatum :

    01.01.1989


    Format / Umfang :

    6 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Effects of prolonged exposure to space flight factors for 175 days on lettuce seeds

    Nevzgodina, L.V. / Maximova, E.N. / Akatov, Yu.A. | Elsevier | 1981


    Inhabited Orbital Stations

    V. Volkov | NTIS | 1970


    Orbital space stations

    Edberg, D.R. | Engineering Index Backfile | 1968


    SOVIET ORBITAL STATIONS

    Petrakov, V.M. | Online Contents | 1994