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  • 1
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    A proposal to determine properties of the gravitropic response of plants in the absence of a complicating g-force (GTHRES) (1993)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: Gravitropic responses of oat seedlings (Avena sativa L.) were measured on Earth and in microgravity (IML-1). The seedlings were grown at 1 g either on Earth or on 1 g centrifuges. They were challenged by centripetal accelerations for which the intensity and duration of the stimulations were varied. All stimulation intensities were in the hypogravity region from 0.1 to 1.0 g. All responses occurred either in Spacelab microgravity or during clinorotation on Earth. The experiments were carried out with the same apparatus in Spacelab and on Earth. The experiments addressed a series of scientific questions and useful data were obtained to provide answers to some but not all of those questions.
    Keywords: LIFE SCIENCES (GENERAL)
    Type: NASA-CR-192219 , NAS 1.26:192219
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    The gravitational plant physiology facility-Description of equipment developed for biological research in spacelab (1994)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: In January 1992, the NASA Suttle mission STS 42 carried a facility designed to perform experiments on plant gravi- and photo-tropic responses. This equipment, the Gravitational Plant Physiology Facility (GPPF) was made up of a number of interconnected units mounted within a Spacelab double rack. The details of these units and the plant growth containers designed for use in GPPF are described. The equipment functioned well during the mission and returned a substantial body of time-lapse video data on plant responses to tropistic stimuli under conditions of orbital microgravity. GPPF is maintained by NASA Ames Research Center, and is flight qualifiable for future spacelab missions.
    Keywords: LIFE SCIENCES (GENERAL)
    Type: Microgravity Science and Technology (ISSN 0938-0108); 7; 3; p. 270-275
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Investigation of wheat coleoptile response to phototropic stimulations (1993)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: This report provides a summary of the preparations for, and the conduct and post-flight data analysis of, the Spacelab flight investigation FOTRAN, which flew on the IML-1 mission (STS-42) in January, 1992. The investigation was designed to provide data on the responses of wheat seedlings to various blue-light stimuli given while the plants were exposed to orbital microgravity conditions. Before the flight, a number of hypotheses were established which were to be tested by the data from the flight and parallel ground studies. A description of the experiment protocol developed for the mission is provided, and an account of the activities supported during preparations for and support of the flight experiment is given. Details of the methods used to reduce and analyze the data from the flight are outlined.
    Keywords: LIFE SCIENCES (GENERAL)
    Type: NASA-CR-192157 , NAS 1.26:192157
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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