Abstract
The effects of test tube seals on the growth, flowering, and seed pod formation of Arabidopsis thaliana (L.) Heynh., mouse ear cress, and Cardamine oligosperma Nutt, bitter cress, are studied in order to assess the conditions used in weightlessness experiments. Among other results, it is found that the growth (height) and flowering (date of bud appearance) were suppressed in mouse ear cress in tubes sealed with Saran. Seed pod formation which occurred by day 45 in open-to-air controls, was still lacking in the sealed plants even up to day 124. The growth and flowering of bitter cress were also suppressed by the Saran seal, although up to day 55 the Saran-sealed plants were taller. It is suggested that atmospheric composition was the cause of the suppression of growth, flowering, and seed pod development in these plants, since the mouse ear cress renewed their growth and then set seed pods after the Saran seal was ruptured.
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Claims 6
Claim · model-written summary
Saran sealing suppressed growth in height and flowering date of mouse ear cress.
- Taxon
- mouse ear cress
Arabidopsis thalianae1 - Treatment
- tubes sealed with Sarane1
- Outcome
- growth (height) and flowering (date of bud appearance)e1
- Direction
- suppressede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the growth (height) and flowering (date of bud appearance) were suppressed in mouse ear cress in tubes sealed with Saran”
Claim · model-written summary
Saran sealing prevented seed pod formation of mouse ear cress up to day 124.
- Taxon
- mouse ear cressArabidopsis thalianae1
- Treatment
- tubes sealed with Sarane1
- Outcome
- seed pod formatione2
- Qualifier
- still lacking in the sealed plants even up to day 124e2
- Comparator
- open-to-air controlse2
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the growth (height) and flowering (date of bud appearance) were suppressed in mouse ear cress in tubes sealed with Saran”
e2“Seed pod formation which occurred by day 45 in open-to-air controls, was still lacking in the sealed plants even up to day 124”
Claim · model-written summary
Saran seal suppressed growth and flowering of bitter cress.
- Taxon
- Cardamine oligosperma
Cardamine oligospermae0 - Treatment
- Saran seale3
- Outcome
- growth and floweringe3
- Direction
- suppressede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cardamine oligosperma Nutt, bitter cress”
e3“The growth and flowering of bitter cress were also suppressed by the Saran seal”
Claim · model-written summary
Up to day 55, Saran-sealed bitter cress plants were taller than unsealed plants, in contrast to later suppression.
- Taxon
- bitter cress
Cardamine scutatae3 - Treatment
- Saran seale3
- Outcome
- growthe3
- Direction
- tallere4
- Qualifier
- up to day 55e4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“The growth and flowering of bitter cress were also suppressed by the Saran seal”
e4“although up to day 55 the Saran-sealed plants were taller”
Claim · model-written summary
Atmospheric composition in the sealed tubes is suggested to cause the suppression of growth, flowering and seed pod development.
- Taxon
- ArabidopsisArabidopsist0
- Outcome
- growth, flowering, and seed pod developmente5
- Qualifier
- atmospheric compositione5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“growth of Arabidopsis and Cardamine”
e5“It is suggested that atmospheric composition was the cause of the suppression of growth, flowering, and seed pod development in these plants”
Claim · model-written summary
Mouse ear cress renewed growth and then set seed pods after the Saran seal was ruptured.
- Taxon
- mouse ear cressArabidopsis thalianae6
- Treatment
- Saran seal was rupturede6
- Outcome
- growthe6
- Direction
- renewede6
- Qualifier
- set seed podse6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“the mouse ear cress renewed their growth and then set seed pods after the Saran seal was ruptured”