Abstract
Abstract Low temperature and oxygen stresses were imposed during the first 48 hr of germination on 2 lines of snap bean ( Phaseolus vulgaris L.), stress tolerant (PI-165426-BS) and stress-sensitive (‘Goldcrop’). At 22°C, O 2 concentrations of 0%, 1%, and 2% increased leakage from the seeds, delayed emergence, and reduced growth, compared to 5% and 21% O 2 . These effects were aggravated by reducing the initial seed moisture from 12% to 8% in ‘Goldcrop’, but not in PI-165426-BS. At 10°, the effect of oxygen deficiency was minimized. Low temperatures inhibited growth of ‘Goldcrop’, but not of PI-165426-BS, and increased leakage from seeds of both lines. The survival of seeds exposed to the low temperature decreased when initial seed moisture was reduced from 12% to 8%. Flooding the seeds for 24 hr increased leakage and reduced emergence and growth much more than 24 hr of complete anoxia. Since the effects of anoxia are different than flooding injury, a mechanism of flooding injury not related to oxygen deficiency is discussed.
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Claims 12
Claim · model-written summary
At 22°C, 0–2% oxygen increased seed leakage relative to 5% and 21% oxygen.
Verbatim
e0“Low temperature and oxygen stresses were imposed during the first 48 hr of germination on 2 lines of snap bean ( Phaseolus vulgaris L.)”
e1“At 22°C, O 2 concentrations of 0%, 1%, and 2% increased leakage from the seeds, delayed emergence, and reduced growth, compared to 5% and 21% O 2 .”
Claim · model-written summary
At 22°C, 0–2% oxygen delayed emergence relative to 5% and 21% oxygen.
Verbatim
e0“snap bean ( Phaseolus vulgaris L.)”
e1“At 22°C, O 2 concentrations of 0%, 1%, and 2% increased leakage from the seeds, delayed emergence, and reduced growth, compared to 5% and 21% O 2 .”
Claim · model-written summary
At 22°C, 0–2% oxygen reduced growth relative to 5% and 21% oxygen.
Verbatim
e0“snap bean ( Phaseolus vulgaris L.)”
e1“At 22°C, O 2 concentrations of 0%, 1%, and 2% increased leakage from the seeds, delayed emergence, and reduced growth, compared to 5% and 21% O 2 .”
Claim · model-written summary
Lower initial seed moisture aggravated oxygen stress effects in Goldcrop.
Verbatim
e0“snap bean ( Phaseolus vulgaris L.)”
e1“These effects were aggravated by reducing the initial seed moisture from 12% to 8% in ‘Goldcrop’, but not in PI-165426-BS.”
Claim · model-written summary
Lower initial seed moisture did not aggravate oxygen stress effects in PI-165426-BS.
- Taxon
- snap beane0
- Material
- PI-165426-BSe1
- Treatment
- reducing the initial seed moisture from 12% to 8%e1
- Outcome
- These effectse1
- Comparator
- 12%e1
Not reportedDirection
Verbatim
e0“snap bean ( Phaseolus vulgaris L.)”
e1“These effects were aggravated by reducing the initial seed moisture from 12% to 8% in ‘Goldcrop’, but not in PI-165426-BS.”
Claim · model-written summary
At 10°, oxygen deficiency had a minimized effect.
Verbatim
e0“snap bean ( Phaseolus vulgaris L.)”
e1“At 10°, the effect of oxygen deficiency was minimized.”
Claim · model-written summary
Low temperature inhibited growth of Goldcrop.
Not reportedComparator
Verbatim
e0“snap bean ( Phaseolus vulgaris L.)”
e1“Low temperatures inhibited growth of ‘Goldcrop’, but not of PI-165426-BS, and increased leakage from seeds of both lines.”
Claim · model-written summary
Low temperature did not inhibit growth of PI-165426-BS.
Not reportedComparatorDirection
Verbatim
e0“snap bean ( Phaseolus vulgaris L.)”
e1“Low temperatures inhibited growth of ‘Goldcrop’, but not of PI-165426-BS, and increased leakage from seeds of both lines.”
Claim · model-written summary
Low temperature increased seed leakage in both lines.
Not reportedComparator
Verbatim
e0“snap bean ( Phaseolus vulgaris L.)”
e1“Low temperatures inhibited growth of ‘Goldcrop’, but not of PI-165426-BS, and increased leakage from seeds of both lines.”
Claim · model-written summary
Reducing initial seed moisture from 12% to 8% decreased survival after low-temperature exposure.
Verbatim
e0“snap bean ( Phaseolus vulgaris L.)”
e1“The survival of seeds exposed to the low temperature decreased when initial seed moisture was reduced from 12% to 8%.”
Claim · model-written summary
Flooding for 24 hours increased leakage more than complete anoxia for 24 hours.
Verbatim
e0“snap bean ( Phaseolus vulgaris L.)”
e1“Flooding the seeds for 24 hr increased leakage and reduced emergence and growth much more than 24 hr of complete anoxia.”
Claim · model-written summary
Flooding for 24 hours reduced emergence and growth more than complete anoxia for 24 hours.
Verbatim
e0“snap bean ( Phaseolus vulgaris L.)”
e1“Flooding the seeds for 24 hr increased leakage and reduced emergence and growth much more than 24 hr of complete anoxia.”
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See all 10 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.