Abstract
Cucumber ( Cucumis sativus L.) production during sustained space missions depends on reliable seed storage and seedling growth in a production facility aboard the space vehicle. NASA sent a space platform, the LDEF, into earth orbit aboard the shuttle Challenger in April 1984. It was retrieved by the shuttle Columbia in January 1990. Cucumber seeds were stored with several levels of protection (constituting 6 treatments) aboard LDEF. Field tests were run at Clinton, NC with 2 seasons, 4 replications, 4 harvests, and 12 seed treatments (including 6 controls). Traits measured included seedling emergence and abnormalities, vine growth, flowering and yield. The largest effects were for percentage emergence, where the seeds receiving the least protection (little cover, vented to outer space) had 40% emergence compared with 80% for the control. There were a large number of seedling abnormalities in the vented treatments, with cotyledon mutants most common, followed by true leaf, then stem. The least protected treatment had 75% abnormalities (mostly minor), compared with 30% for the control. However, plants recovered rapidly, so yield, earliness, percentage cull fruits, and disease incidence were not significantly affected by storage on LDEF.
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Claims 5
Claim · model-written summary
Least-protected orbital cucumber seeds had 40% emergence versus 80% in controls.
- Taxon
- CUCUMBER
Cucumis sativust0 - Treatment
- least protection (little cover, vented to outer space)e0
- Outcome
- emergencee0
- Value
- 40%e0
- Qualifier
- 80%e0
- Comparator
- controle0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seeds receiving the least protection (little cover, vented to outer space) had 40% emergence compared with 80% for the control”
t0“CUCUMBER SEEDS”
Claim · model-written summary
Vented treatments produced many seedling abnormalities, most often in cotyledons.
- Taxon
- CUCUMBERCucumis sativust0
- Organ / stage
- cotyledone0
- Treatment
- vented treatmentse0
- Outcome
- seedling abnormalitiese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There were a large number of seedling abnormalities in the vented treatments, with cotyledon mutants most common, followed by true leaf, then stem”
t0“CUCUMBER SEEDS”
Claim · model-written summary
The least-protected treatment yielded 75% abnormalities versus 30% in controls.
- Taxon
- CUCUMBERCucumis sativust0
- Treatment
- least protected treatmente0
- Outcome
- abnormalitiese0
- Value
- 75%e0
- Qualifier
- 30%e0
- Comparator
- controle0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The least protected treatment had 75% abnormalities (mostly minor), compared with 30% for the control”
t0“CUCUMBER SEEDS”
Claim · model-written summary
Affected cucumber plants recovered rapidly.
- Taxon
- CUCUMBERCucumis sativust0
- Outcome
- recovered rapidlye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plants recovered rapidly”
t0“CUCUMBER SEEDS”
Claim · model-written summary
Orbital seed storage did not significantly affect yield, earliness, cull fruits or disease incidence.
- Taxon
- CUCUMBERCucumis sativust0
- Treatment
- storage on LDEFe0
- Outcome
- yield, earliness, percentage cull fruits, and disease incidencee0
- Direction
- not significantly affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“yield, earliness, percentage cull fruits, and disease incidence were not significantly affected by storage on LDEF”
t0“CUCUMBER SEEDS”
The same questions in other papers
storage · disease · Cucumis sativus (cucumber)Positive and negative results
2 papers in the same direction as this paper · 5 in the opposite direction
- positive
- positive
- positive
4 papers more in this group
See all 8 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.