Abstract
Four-day-old etiolated cucumber cotyledons (Cucumis sativus, L.) were excised and allowed to green in white fluorescent light at 28 C. Cotyledons excised with a full hypocotyl hook exhibited a lag phase of 1 hour before entering the rapid greening phase, whereas cotyledons excised without any hypocotyl hook exhibited a lag phase of 6 hours. Cotyledons excised with varying lengths of hypocotyl hook accumulated chlorophyll roughly in proportion to the hook length. When cotyledons were excised with a full hook and were partially or totally shielded from light with aluminum foil, the samples with the hook covered accumulated more chlorophyll than the wholly exposed samples. The samples with the cotyledons covered showed no net accumulation of chlorophyll irrespective of hook's exposure to light. These data suggest the contribution of some factor or factors by the hypocotyl hook which reduce the lag phase during greening.
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Claims 5
Claim · model-written summary
Cotyledons excised with a full hypocotyl hook had a 1-hour greening lag phase, versus 6 hours without a hook.
- Taxon
- Cucumis sativus
Cucumis sativuse0 - Treatment
- Cotyledons excised with a full hypocotyl hooke1
- Outcome
- lag phasee1
- Direction
- lowerinferrede1
- Value
- 1 houre1
- Qualifier
- 6 hourse1
- Comparator
- without any hypocotyl hooke1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Four-day-old etiolated cucumber cotyledons (Cucumis sativus, L.) were excised”
e1“Cotyledons excised with a full hypocotyl hook exhibited a lag phase of 1 hour before entering the rapid greening phase, whereas cotyledons excised without any hypocotyl hook exhibited a lag phase of 6 hours”
Claim · model-written summary
Cotyledons excised with longer hypocotyl hooks accumulated more chlorophyll, roughly in proportion to hook length.
- Taxon
- Cucumis sativusCucumis sativuse0
- Treatment
- varying lengths of hypocotyl hooke2
- Outcome
- chlorophylle2
- Direction
- increaseinferrede2
- Qualifier
- roughly in proportion to the hook lengthe2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Four-day-old etiolated cucumber cotyledons (Cucumis sativus, L.) were excised”
e2“Cotyledons excised with varying lengths of hypocotyl hook accumulated chlorophyll roughly in proportion to the hook length”
Claim · model-written summary
Cotyledons with a covered hook accumulated more chlorophyll than wholly exposed samples when partially or totally shielded from light.
- Taxon
- Cucumis sativusCucumis sativuse0
- Treatment
- partially or totally shielded from light with aluminum foile3
- Outcome
- chlorophylle3
- Direction
- moree3
- Qualifier
- the hook coverede3
- Comparator
- wholly exposed samplese3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Four-day-old etiolated cucumber cotyledons (Cucumis sativus, L.) were excised”
e3“When cotyledons were excised with a full hook and were partially or totally shielded from light with aluminum foil, the samples with the hook covered accumulated more chlorophyll than the wholly exposed samples”
Claim · model-written summary
Cotyledons with covered cotyledons showed no net chlorophyll accumulation regardless of hook light exposure.
- Taxon
- Cucumis sativusCucumis sativuse0
- Treatment
- the cotyledons coverede4
- Outcome
- net accumulation of chlorophylle4
- Qualifier
- irrespective of hook's exposure to lighte4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Four-day-old etiolated cucumber cotyledons (Cucumis sativus, L.) were excised”
e4“The samples with the cotyledons covered showed no net accumulation of chlorophyll irrespective of hook's exposure to light”
Claim · model-written summary
The hypocotyl hook likely contributes some factor that reduces the greening lag phase.
- Taxon
- Cucumis sativusCucumis sativuse0
- Outcome
- lag phasee5
- Qualifier
- contribution of some factor or factors by the hypocotyl hooke5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Four-day-old etiolated cucumber cotyledons (Cucumis sativus, L.) were excised”
e5“These data suggest the contribution of some factor or factors by the hypocotyl hook which reduce the lag phase during greening”
The same questions in other papers
light · physiology: pigments · Cucumis sativus (cucumber)Positive and negative results
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- positive
- negative
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See all 28 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.