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A method for the imbibition and germination of wheat seeds in spaceA method was developed for the reliable germination in space of wheat seeds on porous tube nutrient delivery systems. Germination paper strips were loosely rolled into cylinders and two seeds inserted close to the outer edges of each cylinder. This configuration: 1) directed the emerging shoots upward and roots downward, 2) was efficient in wicking moisture from the porous tubes, and 3) provided open areas for oxygen diffusion. Cotton tufts were inserted into the bottom crevices of the cylinders to fix the seeds in a mid-level position and cylinders were then storable (indefinitely) prior to the preprogrammed (on-orbit) initiation of imbibition. This method extends both the upper and lower ends of acceptable moisture levels for successful seed germination, increasing the probability of success for spaceflight applications where moisture availability is more variable than on Earth.
Document ID
20040088957
Acquisition Source
Kennedy Space Center
Document Type
Reprint (Version printed in journal)
Authors
Levine, H. G.
(NASA Kennedy Space Center Cocoa Beach FL United States)
Piastuch, W. C.
Sager, J. C.
Date Acquired
August 21, 2013
Publication Date
January 1, 1999
Publication Information
Publication: Life support & biosphere science : international journal of earth space
Volume: 6
Issue: 3
ISSN: 1069-9422
Subject Category
Life Sciences (General)
Funding Number(s)
CONTRACT_GRANT: NAS10-12180
Distribution Limits
Public
Copyright
Other
Keywords
NASA Discipline Life Support Systems
NASA Center KSC

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