AbstractSuper-dwarf wheat grown on the Mir space station using the Svet “Greenhouse” exhibited morphological, metabolic and reproductive abnormalities compared with Earth-grown wheat. Of prominent importance were the abnormalities associated with reproductive ontogeny and the total absence of seed formation on Mir. Changes in the apical meristem associated with transition from the vegetative phase to floral initiation and development of the reproductive spike were all typical of ‘Super-Dwarf’ wheat up to the point of anthesis. Observation of ruptured anthers from the Mir-grown plants revealed what appeared to be normally developed pollen. These pollen gains, however, contained only one nuclei, while normal viable pollen is tri-nucleate. A potentially important difference in the flight experiment, compared with ground reference studies, was the presence of a high level of atmospheric ethylene (1,200 ppb). Ground studies conducted by exposing ‘Super-Dwarf’ wheat to ethylene just prior to anthesis resulted in manifestation of the same abnormalities observed in the space flight samples.


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    Titel :

    Induced abnormality in Mir- and earth grown super dwarf wheat


    Beteiligte:
    Bubenheim, D.L. (Autor:in) / Stieber, J. (Autor:in) / Campbell, W.F. (Autor:in) / Salisbury, F.B. (Autor:in) / Levinski, M. (Autor:in) / Sytchev, V. (Autor:in) / Pdolsky, I. (Autor:in) / Chernova, L. (Autor:in)

    Erschienen in:

    Advances in Space Research ; 31 , 1 ; 229-234


    Erscheinungsdatum :

    01.01.2002


    Format / Umfang :

    6 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Induced Abnormality in Mir- and Earth-Grown Super Dwarf Wheat

    Bubenheim, D. L. / Stieber, J. / Campbell, W. F. et al. | British Library Conference Proceedings | 2003



    Growth of Super-Dwarf Wheat on the Russian Space Station MIR

    Yendler, Boris / Bubenheim, David / Salisbury, Frank B. et al. | SAE Technical Papers | 1996


    Effects of Low Ethylene Levels on USU-Apogee and Super-Dwarf Wheat

    Bugbee, B.G. / Klassen, S.P. / Campbell, W.F. | SAE Technical Papers | 1999


    Effects of low Ethylene Levels on USU-Apogee and Super-Dwarf Wheat

    Klassen, S. P. / Campbell, W. F. / Bugbee, B. G. et al. | British Library Conference Proceedings | 1999