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[Growth and development of plants in a row of generations under the conditions of space flight (experiment Greenhouse-5)]Results of the experiment aimed at harvesting a second space generation of wheat var. Apogee in Mir greenhouse Svet (experiment GREENHOUSE-5) are presented. In space flight, germination rate of space seeds from the first crop made up 89% against 100% of the ground seeds. The full biological ripeness was observed in 20 plants grown from the ground seeds and one plant grown from the space seeds following 80- to 90-d vegetation. The plant of the second space generation was morphologically different neither from the species in the first space crop nor from the ground controls. To study the biological characteristics of Apogee seeds gathered in the first and second crops in spaceflight experiment GREENHOUSE-5, the seeds were planted on their return to the laboratory. Morphometric analysis showed that they were essentially similar to the controls. Hence, the space experiments in Mir greenhouse Svet performed during 1998-1999 gave proof that plants cultivated in microgravity can pass the ontogenetic cycle more than once. However, initial results of the investigations into growth and development of plants through several generations are still in-sufficient to speak of possible delayed effects of the spaceflight factors (microgravity, multicomponent radiation, harmful trace contaminants etc.).
Document ID
20040088704
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Levinskikh, M. A.
Sychev, V. N.
Derendiaeva, T. A.
Signalova, O. B.
Podol'skii, I. G.
Avdeev, S. V.
Bingheim, G. E.
Campbell, W. F.
Date Acquired
August 21, 2013
Publication Date
January 1, 2001
Publication Information
Publication: Aviakosmicheskaia i ekologicheskaia meditsina = Aerospace and environmental medicine
Volume: 35
Issue: 4
ISSN: 0233-528X
Subject Category
Life Sciences (General)
Distribution Limits
Public
Copyright
Other
Keywords
Mir Project
long duration
Flight Experiment
manned
Non-NASA Center
NASA Discipline Plant Biology

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