Abstract The influence of long-term storage of higher plant seeds under space flight conditions (49 to 827 days) on their radiosensibility was studied in the experiments on the orbital stations Salyut 6 and 7. Short-term storage has been proved to have no effect on radiosensitivity of Crepis capillaris seeds. Only in the case of maximal exposure duration the frequency of chromosome aberrations in post-flight irradiated seeds significantly exceeded the chromosome aberration frequency in the ground-based irradiated control. A statistically significant increase in the number of cells with multiple chromosome aberrations was also observed in this experiment. After ▪-irradiation of Arabidopsis thaliana seeds the germinating ability and survival rate of plants decreased depending on the duration of seed storage. Flight-exposed seeds were more sensitive to irradiations with respect to these parameters. A statistically significant increase in the frequency of recessive lethal mutations was observed only in two experiments of long exposure duration.


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    Title :

    Radiosensibility of higher plant seeds after space flight


    Contributors:
    Vaulina, E. (author) / Anikeeva, I. (author) / Kostina, L. (author)

    Published in:

    Advances in Space Research ; 4 , 10 ; 103-107


    Publication date :

    1984-01-01


    Size :

    5 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English