Abstract
The effect of exogenous methyl jasmonate (MJ) and jasmonic acid (JA) compared with the effect of ethephon on surface color and quality of `Golden Delicious' and `Fuji' apples ( Malus ×domestica Borkh.) was studied. Treatments were applied by dipping fruit in water solutions of JA, MJ, or ethephon or by exposing fruit to MJ vapors. Response to MJ vapor treatment depended on fruit developmental stage, with the maximum effect occurring as fruit began to produce ethylene. MJ promoted color changes more effectively than JA. The promotive effect of JA increased with JA concentration. A minimum concentration of 0.1 mmol·L -1 JA was needed to promote significant color change within 15 d at 20 °C. JA at 1 or 10 mmol·L -1 promoted color change more effectively than 0.35 or 3.5 mmol·L -1 ethephon. The magnitude of JA-promoted responses decreased at lower temperatures. Treatments with 10 mmol·L -1 JA or 3.5 mmol·L -1 ethephon were phytotoxic. Treatments using JA at 1 or 10 mmol·L -1 in water promoted loss of fruit titratable acidity compared to controls. Firmness and soluble solids content were relatively unresponsive to JA treatments. Based on these results, using JA and MJ to promote degreening of apple fruit with minimal loss of other quality attributes appears feasible.
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Claims 10
Claim · model-written summary
Methyl jasmonate promoted apple colour change more effectively than jasmonic acid.
- Taxon
- apples
Malus domesticae0 - Treatment
- MJe1
- Outcome
- color changese1
- Direction
- more effectivelye1
- Comparator
- JAe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“`Golden Delicious' and `Fuji' apples”
e1“MJ promoted color changes more effectively than JA”
Claim · model-written summary
The promotive effect of jasmonic acid on apple colour increased with JA concentration.
- Taxon
- applesMalus domesticae0
- Treatment
- JA concentratione2
- Outcome
- promotive effect of JAe2
- Direction
- increasede2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“`Golden Delicious' and `Fuji' apples”
e2“The promotive effect of JA increased with JA concentration”
Claim · model-written summary
A minimum of 0.1 mmol/L JA was needed to promote significant colour change within 15 days at 20 °C in apples.
- Taxon
- applesMalus domesticae0
- Treatment
- 0.1 mmol·L -1 JAe3
- Outcome
- significant color changee3
- Direction
- promotee3
- Value
- 0.1 mmol·L -1e3
- Setting
- at 20 °Ce3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“`Golden Delicious' and `Fuji' apples”
e3“A minimum concentration of 0.1 mmol·L -1 JA was needed to promote significant color change within 15 d at 20 °C”
Claim · model-written summary
JA at 1 or 10 mmol/L promoted apple colour change more effectively than 0.35 or 3.5 mmol/L ethephon.
- Taxon
- applesMalus domesticae0
- Treatment
- JA at 1 or 10 mmol·L -1e4
- Outcome
- color changee4
- Direction
- more effectivelye4
- Comparator
- 0.35 or 3.5 mmol·L -1 ethephone4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“`Golden Delicious' and `Fuji' apples”
e4“JA at 1 or 10 mmol·L -1 promoted color change more effectively than 0.35 or 3.5 mmol·L -1 ethephon”
Claim · model-written summary
The magnitude of JA-promoted apple responses decreased at lower temperatures.
- Taxon
- applesMalus domesticae0
- Treatment
- JAe5
- Outcome
- magnitude of JA-promoted responsese5
- Direction
- decreasede5
- Qualifier
- at lower temperaturese5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“`Golden Delicious' and `Fuji' apples”
e5“The magnitude of JA-promoted responses decreased at lower temperatures”
Claim · model-written summary
Apple treatments with 10 mmol/L JA or 3.5 mmol/L ethephon were phytotoxic.
- Taxon
- applesMalus domesticae0
- Treatment
- 10 mmol·L -1 JA or 3.5 mmol·L -1 ethephone1
- Outcome
- phytotoxice1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“`Golden Delicious' and `Fuji' apples”
e1“Treatments with 10 mmol·L -1 JA or 3.5 mmol·L -1 ethephon were phytotoxic”
Claim · model-written summary
JA at 1 or 10 mmol/L in water promoted loss of apple fruit titratable acidity compared with controls.
- Taxon
- applesMalus domesticae0
- Treatment
- JA at 1 or 10 mmol·L -1e2
- Outcome
- loss of fruit titratable aciditye2
- Direction
- promotede2
- Comparator
- controlse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“`Golden Delicious' and `Fuji' apples”
e2“Treatments using JA at 1 or 10 mmol·L -1 in water promoted loss of fruit titratable acidity compared to controls”
Claim · model-written summary
Apple firmness and soluble solids content were relatively unresponsive to JA treatments.
- Taxon
- applesMalus domesticae0
- Outcome
- Firmness and soluble solids contente3
- Qualifier
- relatively unresponsive to JA treatmentse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“`Golden Delicious' and `Fuji' apples”
e3“Firmness and soluble solids content were relatively unresponsive to JA treatments”
Claim · model-written summary
Response to MJ vapour treatment in apples depended on fruit developmental stage, with the maximum effect as fruit began to produce ethylene.
- Taxon
- applesMalus domesticae0
- Organ / stage
- fruit developmental stagee4
- Treatment
- MJ vapor treatmente4
- Outcome
- maximum effecte4
- Direction
- maximume4
- Qualifier
- as fruit began to produce ethylenee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“`Golden Delicious' and `Fuji' apples”
e4“Response to MJ vapor treatment depended on fruit developmental stage, with the maximum effect occurring as fruit began to produce ethylene”
Claim · model-written summary
Using JA and MJ to promote degreening of apple fruit with minimal loss of other quality attributes appears feasible.
- Taxon
- apple fruitMalus domesticae5
- Outcome
- degreening of apple fruit with minimal loss of other quality attributese5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“using JA and MJ to promote degreening of apple fruit with minimal loss of other quality attributes appears feasible”
The same questions in other papers
jasmonic acid · quality: sugar starch · Malus domestica (apple)Results differ
1 paper in the same direction as this paper
- no effect
(-)-methyl jasmonate · quality: postharvest · Malus domestica (apple)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- positive
- no effect
- positive
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.