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Preliminary Species and Media Selection for the Veggie Space Hardware

Gioia Massa

Gioia Massa

ISS Ground Processing and ResearchKennedy Space Center, FL, United States
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Massa, Gioia
, 
Gerard Newsham

Gerard Newsham

ESC Team QNAKennedy Space Center, FL, United States
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Newsham, Gerard
, 
Mary E. Hummerick

Mary E. Hummerick

ESC Team QNAKennedy Space Center, FL, United States
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Hummerick, Mary E.
, 
Janicce L. Caro

Janicce L. Caro

ESC Team QNAKennedy Space Center, FL, United States
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Caro, Janicce L.
, 
Gary W. Stutte

Gary W. Stutte

ESC Team QNAKennedy Space Center, FL, United States
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Stutte, Gary W.
, 
Robert C. Morrow

Robert C. Morrow

Orbital Technologies CorporationMadison, WI, United States
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Morrow, Robert C.
 and 
Raymond M. Wheeler

Raymond M. Wheeler

Surface Systems DivisionKennedy Space Center, FL, United States
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Wheeler, Raymond M.
  
Jul 01, 2013
Preliminary Species and Media Selection for the Veggie Space Hardware's Cover Image
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Article Category: Research Article
Published Online: Jul 01, 2013
Page range: 95 - 106
DOI: https://doi.org/10.2478/gsr-2013-0008
Keywords
© 2013 Gioia Massa et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Figure 1.

Examples of salad crops growing in pillows. A. ‘Outredgeous’ lettuce in 1:1 Fafard #2: arcillite and B. ‘Cherry Bomb II’ radish in arcillite at harvest of trial 2 (28 DAP). Scale bars are 10 cm.
Examples of salad crops growing in pillows. A. ‘Outredgeous’ lettuce in 1:1 Fafard #2: arcillite and B. ‘Cherry Bomb II’ radish in arcillite at harvest of trial 2 (28 DAP). Scale bars are 10 cm.

Figure 2.

Shoot dry mass of twelve species grown in pillows in two different media. Data are per pillow and a pillow contains two plants (except chives which had 10 plants per pillow). Mass is the sum of the shoot dry mass of all plants in a pillow. Each bar represents one pillow.
Shoot dry mass of twelve species grown in pillows in two different media. Data are per pillow and a pillow contains two plants (except chives which had 10 plants per pillow). Mass is the sum of the shoot dry mass of all plants in a pillow. Each bar represents one pillow.

Figure 3.

Shoot dry mass of lettuce grown in five different media types. Data are means of two pillows per media type for each cultivar, with each pillow containing two plants. Error bars indicate standard deviations. Means within a cultivar with different letters are significantly different at P<0.05.
Shoot dry mass of lettuce grown in five different media types. Data are means of two pillows per media type for each cultivar, with each pillow containing two plants. Error bars indicate standard deviations. Means within a cultivar with different letters are significantly different at P<0.05.

Figure 4.

Average chlorophyll content for five species grown in four types of media. Data are averages for three pillows, with pillow values the average of two plants, and plant values averaging three leaves on a plant. Means within plant species between media types with different letters are significantly different at P<0.05. Where letters are absent there is no significant difference within a species. Error bars indicate standard deviations.
Average chlorophyll content for five species grown in four types of media. Data are averages for three pillows, with pillow values the average of two plants, and plant values averaging three leaves on a plant. Means within plant species between media types with different letters are significantly different at P<0.05. Where letters are absent there is no significant difference within a species. Error bars indicate standard deviations.

Figure 5.

Shoot fresh mass of five species grown in four types of media. Data are averages for three pillows, with pillow values the sum of the shoot (shoot and tap root for radish) fresh mass of two plants. Means within plant species between media types with different letters are significantly different at P<0.05. Where letters are absent there is no significant difference within a species. Error bars indicate standard deviations.
Shoot fresh mass of five species grown in four types of media. Data are averages for three pillows, with pillow values the sum of the shoot (shoot and tap root for radish) fresh mass of two plants. Means within plant species between media types with different letters are significantly different at P<0.05. Where letters are absent there is no significant difference within a species. Error bars indicate standard deviations.

Figure 6.

Dry mass of radish shoots and edible tap roots when grown in four types of media. Data are averages for three pillows, with pillow values the sum of two plants. Error bars indicate standard deviations. Means with different letters are significantly different at P<0.05.
Dry mass of radish shoots and edible tap roots when grown in four types of media. Data are averages for three pillows, with pillow values the sum of two plants. Error bars indicate standard deviations. Means with different letters are significantly different at P<0.05.

Figure 7.

Biomass partitioning between the storage root and shoot calculated from dry mass. Data are means from three pillows (six plants) of each media types and error bars indicate standard deviations.
Biomass partitioning between the storage root and shoot calculated from dry mass. Data are means from three pillows (six plants) of each media types and error bars indicate standard deviations.

Calculated maximum edible growth rates of tested species in highest yielding media (highest yielding for dry mass)_ Calculations use a 28 day growth period and a pillow with external area of 0_015 m2_ Mass is an average of three pillows with two plants per pillow_ Radish data are for tap root mass while other data are for shoot mass_

Plants Edible Growth Rate Media
(g FM/m2/day) (g DM/m2/day)
Cabbage 42.9 8.0 1:1 Fafard#2: arcillite
Chard 24.3 4.4 7:3 Fafard#2: arcillite
Lettuce 38.3 3.5 1:1 Fafard#2: arcillite
Radish 44.5 4.6 7:3 Fafard#2: arcillite
Snow pea 21.8 4.4 arcillite

Average shoot dry mass (g) (shoot and tap root for radish) per pillow of five species grown in four media types_ Data are averages for three pillows, with pillow values the sum of the dry mass of two plants_ Means between plant species within a media type with different letters are significantly different at P<0_05_ Asterisks indicate means within a species that are significantly different between media types (P<0_05)

Plant MEDIA TYPE
Fafard #2 7:3 Fafard:Arcillite 1:1 Fafard:Arcillite Arcillite
Cabbage 2.21 A 2.29 AB 3.36 A* 2.21 A
Chard 0.92 B 1.86 BC 1.78 B 1.55 AB
Lettuce 0.78 B 1.24 C 1.46 B 1.07 B
Radish 1.63 AB 3.10 A* 1.93 B 1.61 AB
Snow pea 1.25 B 1.53 BC 1.74 B 1.84 AB
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Life Sciences, Life Sciences, other, Materials Sciences, Materials Sciences, other, Physics, Physics, other
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