Science Accommodations in the Biomass Production System

Morrow, Robert C.; Crabb, Thomas M.; Iverson, Jeffery T.; Frank, Jonas

doi:10.4271/2001-01-2231

Cited by 6 publications

(2 citation statements)

References 1 publication

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“…PESTO was conducted in PGCs 1-3 of the BPS. The 4th PGC was planted with Brassicca rapa as part of a separate hardware validation test (Morrow et al 2001;Iverson et al 2003). …”

Section: Spaceflight Hardwarementioning

confidence: 99%

“…Photosynthesis measurements were possible only after the plants in the chambers were large enough to bring down the chamber CO 2 concentration below the 1500 lmol mol À1 setpoint. The rate of CO 2 additions was corrected for chamber leak rate and for chamber ''cross-talk'' associated with multiplexing of sample gas lines to a common detector (Morrow et al 2001;Stutte et al 2000 …”

Section: Plant Stand Photosynthesismentioning

confidence: 99%

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Microgravity does not alter plant stand gas exchange of wheat at moderate light levels and saturating CO2 concentration

Monje

Stutte

Chapman

2005

Planta

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Plant stand gas exchange was measured nondestructively in microgravity during the Photosynthesis Experiment Subsystem Testing and Operations experiment conducted onboard the International Space Station. Rates of evapotranspiration and photosynthesis measured in space were compared with ground controls to determine if microgravity directly affects whole-stand gas exchange of Triticum aestivum. During six 21-day experiment cycles, evapotranspiration was determined continuously from water addition rates to the nutrient delivery system, and photosynthesis was determined from the amount of CO2 added to maintain the chamber CO2 concentration setpoint. Plant stand evapotranspiration, net photosynthesis, and water use efficiency were not altered by microgravity. Although leaf area was significantly reduced in microgravity-grown plants compared to ground control plants, leaf area distribution was not affected enough to cause significant differences in the amounts of light absorbed by the flight and ground control plant stands. Microgravity also did not affect the response of evapotranspiration to changes in chamber vapor pressure difference of 12-day-old wheat plant stands. These results suggest that gravity naïve plants grown at moderate light levels (300 micromol m(-2) s(-1)) behave the same as ground control plants. This implies that future plant-based regenerative life support systems can be sized using 1 g data because water purification and food production rates operate at nearly the same rates as in 1 g at moderate light levels. However, it remains to be verified whether the present results are reproducible in plants grown under stronger light levels.

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“…PESTO was conducted in PGCs 1-3 of the BPS. The 4th PGC was planted with Brassicca rapa as part of a separate hardware validation test (Morrow et al 2001;Iverson et al 2003). …”

Section: Spaceflight Hardwarementioning

confidence: 99%

Section: Plant Stand Photosynthesismentioning

confidence: 99%

Microgravity does not alter plant stand gas exchange of wheat at moderate light levels and saturating CO2 concentration

Monje

Stutte

Chapman

2005

Planta

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Lighting Equipment for a Crop Growing System in Microgravity Conditions for Space Mission

Schettini¹

2005

Acta Hortic.

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Plant Pillow Preparation for the Veggie Plant Growth System on the International Space Station

Massa

Newsham

Hummerick

et al. 2017

Gravitational and Space Research

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The first Veggie plant growth chamber was installed on the International Space Station in 2014. Crop plants can be grown in Veggie using plant pillows, small rooting packets that contain substrate, fertilizer, and germination wicks along with attached seeds. The pillows were designed to interface with the Veggie root mat reservoir watering system to provide a capillary water column to growing plants. In preparation for flight, methods of arcillite substrate washing, autoclaving, and drying were established to reduce dust and to provide a dry sterile substrate. A controlled released fertilizer mixed into arcillite substrate provides nutrition for plant growth. Methods of seed surface sterilization were tested for both germination and microbial contamination, and the optimum methods were determined for candidate flight crops. Plant pillows were prepared for flight by cutting and inserting germination wicks, filling with the substrate/fertilizer mix, and sewing closed. Following pillow filling, seeds were attached to the wicks, and the pillows were packaged for flight. Pillow preparation methods have been successfully tested in the VEG-01 hardware validation tests on the International Space Station with ‘Outredgeous’ lettuce and ‘Profusion’ zinnia, and in the VEG-03 test, using ‘Outredgeous’ lettuce and ‘Tokyo bekana’ Chinese cabbage.

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Science Accommodations in the Biomass Production System

Cited by 6 publications

References 1 publication

Microgravity does not alter plant stand gas exchange of wheat at moderate light levels and saturating CO2 concentration

Microgravity does not alter plant stand gas exchange of wheat at moderate light levels and saturating CO2 concentration

Lighting Equipment for a Crop Growing System in Microgravity Conditions for Space Mission

Plant Pillow Preparation for the Veggie Plant Growth System on the International Space Station

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