Paper · 1991 · NASA Technical Reports Server (NASA)

Seeds in space experiment results

Jim A. Alston

3
claims
5
verbatim quotes
0
citations
2
research areas
—
Not open access

Abstract

Two million seeds of 120 different varieties representing 106 species, 97 genera, and 55 plant families were flown aboard the Long Duration Exposure Facility (LDEF). The seeds were housed on the space exposed experiment developed for students (SEEDS) tray in sealed canister number six and in two small vented canisters. The tray was in the F-2 position. The seeds were germinated and the germination rates and development of the resulting plants compared to the control seed that stayed in Park Seed's seed storage facility. The initial results are presented. There was a better survival rate in the sealed canister in space than in the storage facility at Park Seed. At least some of the seeds in each of the vented canisters survived the exposure to vacuum for almost six years. The number of observed apparent mutations was very low.

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Claims 3

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Seed survival was better in the sealed space canister than in the ground storage facility.

Taxon
seedse1
Treatment
sealed canister in spacee0
Outcome
survival ratee0
Direction
bettere0
Comparator
storage facility at Park Seede0

Verbatim

e0

“There was a better survival rate in the sealed canister in space than in the storage facility at Park Seed”

✓ located verbatim in the source · abstract, characters 561–667 · show in text ↑
e1

“At least some of the seeds in each of the vented canisters survived the exposure to vacuum for almost six years”

✓ located verbatim in the source · abstract, characters 669–780 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Some seeds in each vented canister survived nearly six years of vacuum exposure.

Taxon
seedse0
Treatment
exposure to vacuum for almost six yearse0
Outcome
seeds in each of the vented canisters survivede0

Verbatim

e0

“At least some of the seeds in each of the vented canisters survived the exposure to vacuum for almost six years”

✓ located verbatim in the source · abstract, characters 669–780 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Very few apparent mutations were observed in the exposed plant material.

Taxon
plantsViridiplantaee1
Outcome
observed apparent mutationse0
Direction
very lowe0

Verbatim

e0

“The number of observed apparent mutations was very low”

✓ located verbatim in the source · abstract, characters 782–836 · show in text ↑
e1

“The seeds were germinated and the germination rates and development of the resulting plants compared to the control seed”

✓ located verbatim in the source · abstract, characters 355–475 · show in text ↑