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Examining Dehydration and Hypoxic Stress in Wheat Plants Using a Porous Tube Plant Nutrient Delivery System Developed for Microgravity
Technical Paper
2005-01-2948
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The Porous Tube Plant Nutrient Delivery System (PTPNDS) was designed for NASA to grow plants in microgravity of space. The system utilizes a controlled fluid loop to supply nutrients and water to plant roots growing on a ceramic surface moistened by capillary action. Utilizing remote sensing systems, spectral analyses procedures, gas-exchange, and fluorescence measurements, we examined differences in plant water status for wheat plants (Triticum aestivum, cv. Perigee). These plants were grown in a modified growth chamber during the summers of 2003 and 2004. Some differences in plant performance were detectable in the gas-exchange and fluorescence measurements. For instance, in both years the plants grown with the most available water had the lowest rates of photosynthesis and exhibited higher proportions of non-photochemical quenching, particularly under low light levels. In addition, small differences in mean leaf water content between treatments were detected using spectral reflectance analyses.
Authors
- T. W. Dreschel
- C. R. Hall - Dynamac Corporation, Kennedy Space Center
- T. E. Foster - Dynamac Corporation, Kennedy Space Center
- M. Salganic - Spaceflight and Life Sciences Training Program, Kennedy Space Center
- L. Warren - Spaceflight and Life Sciences Training Program, Kennedy Space Center
- M. Corbett - Spaceflight and Life Sciences Training Program, Kennedy Space Center
Topic
Citation
Dreschel, T., Hall, C., Foster, T., Salganic, M. et al., "Examining Dehydration and Hypoxic Stress in Wheat Plants Using a Porous Tube Plant Nutrient Delivery System Developed for Microgravity," SAE Technical Paper 2005-01-2948, 2005, https://doi.org/10.4271/2005-01-2948.Also In
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