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  • Title: Results of cytogenetic studies of seeds after their extended orbital flight aboard the Salyut orbital scientific station.
    Author: Nevzgodina LV, Grigoryev YG, Papyan NM, Skukina IS, Farber YV.
    Journal: Life Sci Space Res; 1973; 11():111-5. PubMed ID: 11998856.
    Abstract:
    Air-dry seeds of Lactuca sativa (lettuce) with a different level of spontaneous mitagenesis were used in these experiments. A part of the seeds was given pre-flight gamma radiation in doses of 1 and 10 krads. Comparison of the results for the in-flight experiments, laboratory and "transport" control showed an increase of cells with chromosome aberrations and an increase of radiobiological effect in irradiated seeds flown aboard the Salyut scientific station. A comparative analysis was made of the cytogenetic changes in seeds after their exposure to different periods of weightlessness during the Cosmos 368, Zond 8 and Salyut missions. The effect of weightlessness of different duration on the development of cytogenetic changes in irradiated and unirradiated seeds is discussed.
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