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 seed were housed on the Space Exposed Experiment Developed for Students (SEEDS) tray in the sealed canister number 6 and in two small vented canisters. The tray was in the F-2 position. The seed were germinated and the germination rates and the development of the resulting plants were compared to the performance of the control seed that stayed in Park Seed's seed storage facility. The initial results were presented in a paper at the First LDEF Post-Retrieval Symposium. There was a better survival rate of the seed in the sealed canister in space than in the storage facility at Park Seed. At least some of the seed in each of the vented canisters survived the exposure to vacuum for almost six years. The number of observed apparent mutations was very low. In the initial testing, the small seeded crops were not grown to maturity to check for mutations and obtain second generation seed. These small seeded crops have now been grown for evaluation and second generation seed collected.
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Claims 4
Claim · model-written summary
Seeds in the sealed space canister survived better than seeds in storage.
- Treatment
- sealed canister in spacee0
- Outcome
- survival rate of the seede0
- Direction
- bettere0
- Comparator
- storage facility at Park Seede0
Not reportedTaxon
Verbatim
e0“There was a better survival rate of the seed in the sealed canister in space than in the storage facility at Park Seed.”
Claim · model-written summary
Some seeds survived nearly six years of vacuum exposure in vented canisters.
- Treatment
- exposure to vacuume0
- Outcome
- seed in each of the vented canisters survivede0
- Value
- almost six yearse0
Not reportedTaxonDirection
Verbatim
e0“At least some of the seed in each of the vented canisters survived the exposure to vacuum for almost six years.”
Claim · model-written summary
Very few apparent mutations were observed among the resulting plants.
Not reportedTaxon
Verbatim
e0“The number of observed apparent mutations was very low.”
Claim · model-written summary
The small seeded crops were grown for evaluation and second-generation seeds were collected.
Not reportedDirection
Verbatim
e0“These small seeded crops have now been grown for evaluation and second generation seed collected.”