Abstract
SummaryThe absorption of solutions of 2-chloroethylphosphonic acid (CEPA) or 2, 4-di-chlorphenoxy acetic acid (2, 4-D) at 100 mg l-1 through cut stems, or of ethylene gas, accelerated the senescence of cut carnation flowers. Accelerated growth of the ovary wall, placenta and receptacle accompanied wilting of petals, a typical symptom of senescence, both in the intact or cut flower. Fresh weight, dry weight and girth of the ovary were significantly greater in flowers treated with CEPA orr 2, 4-D than in controls held in water. The CEPA treatment was less effective in promoting dry weight increase of the ovary if the petals were removed. CEPA and 2, 4-D released ethylene or induced its formation in the carnation flower.On the grounds that growth changes in the ovary, induced by ethylene, simulate natural pollination and fertilization, except for seed development, it is postulated that ethylene acts as a terminal growth regulator in the carnation.
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Claims 10
Claim · model-written summary
CEPA accelerated cut carnation flower senescence.
- Taxon
- the carnation (Dianthus caryophyllus)
Dianthus caryophyllust0 - Treatment
- 2-chloroethylphosphonic acid (CEPA)e0
- Outcome
- senescence of cut carnation flowerse0
- Direction
- acceleratede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“the carnation (Dianthus caryophyllus)”
e0“The absorption of solutions of 2-chloroethylphosphonic acid (CEPA) or 2, 4-di-chlorphenoxy acetic acid (2, 4-D) at 100 mg l-1 through cut stems, or of ethylene gas, accelerated the senescence of cut carnation flowers.”
Claim · model-written summary
2, 4-D accelerated cut carnation flower senescence.
- Taxon
- the carnation (Dianthus caryophyllus)Dianthus caryophyllust0
- Treatment
- 2, 4-di-chlorphenoxy acetic acid (2, 4-D) at 100 mg l-1e0
- Outcome
- senescence of cut carnation flowerse0
- Direction
- acceleratede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“the carnation (Dianthus caryophyllus)”
e0“The absorption of solutions of 2-chloroethylphosphonic acid (CEPA) or 2, 4-di-chlorphenoxy acetic acid (2, 4-D) at 100 mg l-1 through cut stems, or of ethylene gas, accelerated the senescence of cut carnation flowers.”
Claim · model-written summary
Ethylene accelerated cut carnation flower senescence.
- Taxon
- the carnation (Dianthus caryophyllus)Dianthus caryophyllust0
- Treatment
- ethylene gase0
- Outcome
- senescence of cut carnation flowerse0
- Direction
- acceleratede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“the carnation (Dianthus caryophyllus)”
e0“The absorption of solutions of 2-chloroethylphosphonic acid (CEPA) or 2, 4-di-chlorphenoxy acetic acid (2, 4-D) at 100 mg l-1 through cut stems, or of ethylene gas, accelerated the senescence of cut carnation flowers.”
Claim · model-written summary
Growth of the ovary wall, placenta, and receptacle accelerated alongside petal wilting in intact or cut flowers.
- Taxon
- the carnation (Dianthus caryophyllus)Dianthus caryophyllust0
- Organ / stage
- intact or cut flowere0
- Outcome
- growth of the ovary wall, placenta and receptaclee0
- Direction
- Acceleratede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“the carnation (Dianthus caryophyllus)”
e0“Accelerated growth of the ovary wall, placenta and receptacle accompanied wilting of petals, a typical symptom of senescence, both in the intact or cut flower.”
Claim · model-written summary
CEPA increased ovary fresh weight, dry weight, and girth significantly against water controls.
- Taxon
- the carnation (Dianthus caryophyllus)Dianthus caryophyllust0
- Treatment
- CEPAe0
- Outcome
- Fresh weight, dry weight and girth of the ovarye0
- Direction
- greatere0
- Comparator
- controls held in watere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“the carnation (Dianthus caryophyllus)”
e0“Fresh weight, dry weight and girth of the ovary were significantly greater in flowers treated with CEPA orr 2, 4-D than in controls held in water.”
Claim · model-written summary
2, 4-D increased ovary fresh weight, dry weight, and girth significantly against water controls.
- Taxon
- the carnation (Dianthus caryophyllus)Dianthus caryophyllust0
- Treatment
- 2, 4-De0
- Outcome
- Fresh weight, dry weight and girth of the ovarye0
- Direction
- greatere0
- Comparator
- controls held in watere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“the carnation (Dianthus caryophyllus)”
e0“Fresh weight, dry weight and girth of the ovary were significantly greater in flowers treated with CEPA orr 2, 4-D than in controls held in water.”
Claim · model-written summary
Removing petals reduced the promotion of ovary dry weight by CEPA.
- Taxon
- the carnation (Dianthus caryophyllus)Dianthus caryophyllust0
- Treatment
- petals were removede0
- Outcome
- dry weight increase of the ovarye0
- Direction
- less effectivee0
- Qualifier
- CEPA treatmente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“the carnation (Dianthus caryophyllus)”
e0“The CEPA treatment was less effective in promoting dry weight increase of the ovary if the petals were removed.”
Claim · model-written summary
CEPA released ethylene or induced its formation in carnation flowers.
- Taxon
- the carnation (Dianthus caryophyllus)Dianthus caryophyllust0
- Treatment
- CEPAe0
- Outcome
- ethylenee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“the carnation (Dianthus caryophyllus)”
e0“CEPA and 2, 4-D released ethylene or induced its formation in the carnation flower.”
Claim · model-written summary
2, 4-D released ethylene or induced its formation in carnation flowers.
- Taxon
- the carnation (Dianthus caryophyllus)Dianthus caryophyllust0
- Treatment
- 2, 4-De0
- Outcome
- ethylenee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“the carnation (Dianthus caryophyllus)”
e0“CEPA and 2, 4-D released ethylene or induced its formation in the carnation flower.”
Claim · model-written summary
The authors postulate that ethylene serves as a terminal growth regulator in carnation.
- Taxon
- the carnation (Dianthus caryophyllus)Dianthus caryophyllust0
- Treatment
- ethylenee0
- Outcome
- terminal growth regulatore0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“the carnation (Dianthus caryophyllus)”
e0“it is postulated that ethylene acts as a terminal growth regulator in the carnation”
The same questions in other papers
2,4-D · physiology: hormones · Dianthus caryophyllus (carnation)Results differ
1 paper in the same direction as this paper
- positive
ethene · quality: postharvest · Dianthus caryophyllus (carnation)Positive and negative results
1 paper in the same direction as this paper · 7 in the opposite direction
- negative
- negative
- negative
5 papers more in this group
See all 9 papers →2,4-D · growth · Dianthus caryophyllus (carnation)Results agree
8 papers in the same direction as this paper
- positive
- positive
- positive
5 papers more in this group
See all 9 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.