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The Plant Research Unit: Long-Term Plant Growth Support for Space StationThe specifications of the plant research unit (PRU) plant habitat, designed for space station operations, are presented. A prototype brassboard model of the PRU is described, and the results of the subsystems tests are outlined. The effects of the long term red light emitting diode (LED) illumination as the sole source for plant development were compared with red LEDs supplemented with blue wavelengths, and white fluorescent sources. It was found that wheat and Arabidopsis were able to complete a life cycle under red LEDs alone, but with differences in physiology and morphology. The differences noted were greatest for the Arabidopsis, where the time to flowering was increased under red illumination. The addition of 10 percent of blue light was effective in eliminating the observed differences. The results of the comparative testing of three nutrient delivery systems for the PRU are discussed.
Document ID
19970016634
Acquisition Source
Kennedy Space Center
Document Type
Conference Paper
Authors
Heathcote, D. G.
(Lockheed Martin Engineering and Science Services Moffett Field, CA United States)
Brown, C. S.
(Dynamac Corp. Cocoa Beach, FL United States)
Goins, G. D.
(Dynamac Corp. Cocoa Beach, FL United States)
Kliss, M.
(NASA Ames Research Center Moffett Field, CA United States)
Levine, H.
(Dynamac Corp. Cocoa Beach, FL United States)
Lomax, P. A.
(Lockheed Martin Engineering and Science Services Moffett Field, CA United States)
Porter, R. L.
(GB Technology, Inc. Moffett Field, CA United States)
Wheeler, R.
(NASA Kennedy Space Center Cocoa Beach, FL United States)
Date Acquired
August 17, 2013
Publication Date
October 1, 1996
Subject Category
Life Sciences (General)
Accession Number
97N19075
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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