Abstract
`Redcort Cortland' and `Redmax' and `Summerland McIntosh' apples (Malus × domestica Borkh.) were treated with 900 nL·L -1 of 1-methylcyclopropene (1-MCP) for 24 hours at 20 °C before storage and were kept at 3 °C in either a controlled atmosphere (CA) of 2 kPa O 2 and <2.5 kPa CO 2 or in an air (RA) environment for up to 9 months. After 4.5 months, half of the fruit were treated with a second 900 nL·L -1 1-MCP application in air at 3 °C for 24 hours and then returned to RA or CA storage. At harvest and following removal at 3, 6, and 9 months and a 7-day shelf life at 20 °C, fruit firmness, titratable acidity (TA) and soluble solids content (SSC) were measured, while internal ethylene concentrations (IEC) in the apple core were quantified after 1 day at 20 °C. Upon storage removal and following a 21-day shelf life at 20 °C, disorder incidence was evaluated. 1-MCP-treated apples, particularly those held in CA-storage, were more firm and had lower IEC than untreated fruit. Higher TA levels were maintained with 1-MCP in all three strains from both storages, while SSC was not affected. Following the 6- and/or 9-month removals, 1-MCP suppressed superficial scald development in all strains and reduced core browning and senescent breakdown in RA-stored `Redmax' and `Summerland' and senescent breakdown in RA-stored `Redcort'. 1-MCP generally maintained the quality of `Cortland' and `McIntosh' fruit held in CA and RA environments (particularly the former) to a higher degree than untreated apples over the 9-month storage period. A second midstorage application of 1-MCP at 3 °C did not improve poststorage fruit quality above a single, prestorage treatment.
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Claims 10
Claim · model-written summary
Apples treated with 1-MCP, particularly those held in CA storage, were firmer than untreated fruit.
- Taxon
- apples
Malus domesticae0 - Treatment
- 1-MCPe0
- Outcome
- firme0
- Direction
- more firme0
- Qualifier
- particularly those held in CA-storagee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“1-MCP-treated apples, particularly those held in CA-storage, were more firm”
Claim · model-written summary
Apples treated with 1-MCP, particularly those held in CA storage, had lower internal ethylene concentration (IEC) than untreated fruit.
- Taxon
- applesMalus domesticae0
- Treatment
- 1-MCPe0
- Outcome
- IECe0
- Direction
- lowere0
- Qualifier
- particularly those held in CA-storagee0
- Comparator
- untreated fruite0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“1-MCP-treated apples, particularly those held in CA-storage, were more firm and had lower IEC than untreated fruit”
Claim · model-written summary
Higher titratable acidity was maintained with 1-MCP in all three strains from both storages.
- Taxon
- AppleMalus domesticat0
- Treatment
- 1-MCPe0
- Outcome
- TA levelse0
- Direction
- Highere0
- Qualifier
- all three strains from both storagese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Apple”
e0“Higher TA levels were maintained with 1-MCP in all three strains from both storages”
Claim · model-written summary
Soluble solids content was not affected by 1-MCP.
- Taxon
- AppleMalus domesticat0
- Treatment
- 1-MCPe0
- Outcome
- SSCe0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Apple”
e0“Higher TA levels were maintained with 1-MCP in all three strains from both storages, while SSC was not affected”
Claim · model-written summary
After the 6- and/or 9-month removals, 1-MCP suppressed superficial scald development in all strains.
- Taxon
- AppleMalus domesticat0
- Treatment
- 1-MCPe0
- Outcome
- superficial scald developmente0
- Direction
- suppressede0
- Qualifier
- all strainse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Apple”
e0“Following the 6- and/or 9-month removals, 1-MCP suppressed superficial scald development in all strains”
Claim · model-written summary
After the 6- and/or 9-month removals, 1-MCP reduced core browning and senescent breakdown in RA-stored Redmax apples.
- Taxon
- AppleMalus domesticat0
- Material
- Redmaxe0
- Outcome
- core browning and senescent breakdowne0
- Direction
- reducede0
- Qualifier
- RA-storede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Apple”
e0“reduced core browning and senescent breakdown in RA-stored `Redmax' and `Summerland'”
Claim · model-written summary
After the 6- and/or 9-month removals, 1-MCP reduced core browning and senescent breakdown in RA-stored Summerland apples.
- Taxon
- AppleMalus domesticat0
- Material
- Summerlande0
- Outcome
- core browning and senescent breakdowne0
- Direction
- reducede0
- Qualifier
- RA-storede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Apple”
e0“reduced core browning and senescent breakdown in RA-stored `Redmax' and `Summerland'”
Claim · model-written summary
After the 6- and/or 9-month removals, 1-MCP reduced senescent breakdown in RA-stored Redcort apples.
- Taxon
- AppleMalus domesticat0
- Material
- Redcorte0
- Outcome
- senescent breakdowne0
- Qualifier
- RA-storede0
Not reportedTreatmentComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Apple”
e0“senescent breakdown in RA-stored `Redcort'”
Claim · model-written summary
Over the 9-month storage period 1-MCP generally maintained the quality of Cortland and McIntosh fruit in CA and RA storage, particularly CA, to a higher degree than untreated apples.
- Taxon
- applesMalus domesticae0
- Treatment
- 1-MCPe0
- Outcome
- qualitye0
- Direction
- higher degreee0
- Comparator
- untreated applese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“1-MCP generally maintained the quality of `Cortland' and `McIntosh' fruit held in CA and RA environments (particularly the former) to a higher degree than untreated apples over the 9-month storage period”
Claim · model-written summary
A second midstorage application of 1-MCP at 3 C did not improve poststorage fruit quality beyond a single prestorage treatment.
- Taxon
- AppleMalus domesticat0
- Treatment
- second midstorage application of 1-MCP at 3 °Ce0
- Outcome
- poststorage fruit qualitye0
- Direction
- did not improvee0
- Comparator
- single, prestorage treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Apple”
e0“A second midstorage application of 1-MCP at 3 °C did not improve poststorage fruit quality above a single, prestorage treatment”
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