Abstract
In three experiments, apple trees ( Malus × domestica Borkh.) were sprayed, when fruits were 20 to 30 mm in diameter, with a combination of ethephon (800 mg·L -1 ) and carbaryl (600 mg·L -1 ) to induce abscission of all fruits on the tree. Two days after treatment (DAT), most treated fruits stopped or slowed increasing in diameter, fruit water potential was less negative, and starch accumulation was less than for nontreated fruits. Cellulase activity appeared in the abscission zone by 4 DAT. Fruit growth cessation following treatment was probably due to inadequate assimilate supplied to the fruit, but assimilate flow slowed before cellulase activity was apparent in the abscission zone. Chemical names used: 2-chloroethyl phosphonic acid (ethephon); 1-naphthyl ( N -) methylcarbamate (carbaryl).
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Claims 5
Claim · model-written summary
Most treated apple fruits stopped or slowed diameter increase two days after treatment.
- Taxon
- apple trees ( Malus × domestica Borkh.)
Malus domesticae0 - Organ / stage
- fruitse1
- Treatment
- a combination of ethephon (800 mg·L -1 ) and carbaryl (600 mg·L -1 )e0
- Outcome
- increasing in diametere1
- Direction
- stopped or slowede1
- Qualifier
- Two days after treatment (DAT)e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“apple trees ( Malus × domestica Borkh.) were sprayed, when fruits were 20 to 30 mm in diameter, with a combination of ethephon (800 mg·L -1 ) and carbaryl (600 mg·L -1 )”
e1“Two days after treatment (DAT), most treated fruits stopped or slowed increasing in diameter”
Claim · model-written summary
Treated fruit water potential was less negative than in untreated fruit after two days.
- Taxon
- apple trees ( Malus × domestica Borkh.)Malus domesticae0
- Treatment
- a combination of ethephon (800 mg·L -1 ) and carbaryl (600 mg·L -1 )e0
- Outcome
- fruit water potentiale1
- Direction
- less negativee1
- Qualifier
- Two days after treatment (DAT)e2
- Comparator
- nontreated fruitse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“apple trees ( Malus × domestica Borkh.) were sprayed, when fruits were 20 to 30 mm in diameter, with a combination of ethephon (800 mg·L -1 ) and carbaryl (600 mg·L -1 )”
e1“fruit water potential was less negative, and starch accumulation was less than for nontreated fruits”
e2“Two days after treatment (DAT)”
Claim · model-written summary
Treated fruit starch accumulation was less than in untreated fruits after two days.
- Taxon
- apple trees ( Malus × domestica Borkh.)Malus domesticae0
- Treatment
- a combination of ethephon (800 mg·L -1 ) and carbaryl (600 mg·L -1 )e0
- Outcome
- starch accumulatione1
- Direction
- lesse1
- Qualifier
- Two days after treatment (DAT)e2
- Comparator
- nontreated fruitse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“apple trees ( Malus × domestica Borkh.) were sprayed, when fruits were 20 to 30 mm in diameter, with a combination of ethephon (800 mg·L -1 ) and carbaryl (600 mg·L -1 )”
e1“starch accumulation was less than for nontreated fruits”
e2“Two days after treatment (DAT)”
Claim · model-written summary
Cellulase activity appeared in the apple fruit abscission zone by day four.
- Taxon
- apple trees ( Malus × domestica Borkh.)Malus domesticae1
- Organ / stage
- abscission zonee0
- Gene
- Cellulasee0
- Outcome
- Cellulase activity appearede0
- Qualifier
- by 4 DATe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cellulase activity appeared in the abscission zone by 4 DAT”
e1“apple trees ( Malus × domestica Borkh.)”
Claim · model-written summary
Authors attributed fruit growth cessation probably to inadequate assimilate supply, with flow slowing before cellulase appeared.
- Taxon
- apple trees ( Malus × domestica Borkh.)Malus domesticae1
- Outcome
- Fruit growth cessatione0
- Qualifier
- inadequate assimilate supplied to the fruite0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fruit growth cessation following treatment was probably due to inadequate assimilate supplied to the fruit, but assimilate flow slowed before cellulase activity was apparent in the abscission zone”
e1“apple trees ( Malus × domestica Borkh.)”
The same questions in other papers
(2-chloroethyl)phosphonic acid · growth · Malus domestica (apple)Results differ
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- positive
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carbaryl · growth · Malus domestica (apple)Positive and negative results
2 papers in the same direction as this paper · 3 in the opposite direction
- positive
- positive
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See all 6 papers →(2-chloroethyl)phosphonic acid · quality: sugar starch · Malus domestica (apple)Positive and negative results
1 paper in the same direction as this paper · 11 in the opposite direction
- positive
- positive
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9 papers more in this group
See all 13 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.