Abstract
1-MCP is a competitive, gaseous ethylene inhibitor, which binds irreversibly to ethylene receptors and thereby blocks effects of ethylene in plants. The potential for 1-MCP to delay ripening in avocado cv. ‘Pollock’ fruit was examined under tropical ambient storage conditions. Fruits harvested at commercial maturity were exposed to 300 nll-1 1-MCP gas for 20 h under 27± 2 ˚C and then stored under ambient conditions (27± 2 ˚C and relative humidity 65 ± 2%). Fruits were assessed daily for fresh weight, firmness, skin colour, fungal rot development and glossiness. The antifungal activity in diethylether extracts of fruit peel was assessed through thin layer chromatography (TLC) coupled with Cladosporium bioassay. Exposure to 1-MCP extended the shelf life up to 9 days of fruit by 2.2 fold as compared to the shelf life of 4 days of the controls. Stem end rot caused by Botryodiplodia theobromae was found to be the shelf-life determining factor of the fruits. 1-MCP treatment resulted in a significant (p< 0.05) delay in change in peel colour, softening and glossiness of fruit as compared to the controls. Bioassays using Cladosporium fungus revealed the presence of antifungal activity at Rf0.75 in both 1-MCP treated and control fruits. 1-MCP treatment was effective in delaying the decline of antifungal activity in fruit apparently along with the delay of other ripening-related changes and minimizing losses encountered during storage under warmer ambient conditions.
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Claims 6
Claim · model-written summary
1-MCP extended shelf life to 9 days, 2.2-fold versus 4-day controls.
- Taxon
- avocado
Persea americanat0 - Treatment
- 1-MCPe0
- Outcome
- shelf lifee0
- Direction
- extendede0
- Value
- 9 dayse0
- Qualifier
- 2.2 folde0
- Comparator
- controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exposure to 1-MCP extended the shelf life up to 9 days of fruit by 2.2 fold as compared to the shelf life of 4 days of the controls.”
t0“avocado cv. ‘pollock’”
Claim · model-written summary
Botryodiplodia stem-end rot determined fruit shelf life.
- Taxon
- avocadoPersea americanat0
- Interactor
- Botryodiplodia theobromae
_Lasiodiplodia_theobromae_sporulating_in_fruit_lesion.jpg?width=60)
Lasiodiplodia theobromaee0pathogen - Outcome
- Stem end rote0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Lasiodiplodia_theobromae_sporulating_in_fruit_lesion.jpg?width=500)
Verbatim
e0“Stem end rot caused by Botryodiplodia theobromae was found to be the shelf-life determining factor of the fruits.”
t0“avocado cv. ‘pollock’”
Claim · model-written summary
1-MCP significantly delayed peel color change, softening, and glossiness relative to controls.
- Taxon
- avocadoPersea americanat0
- Treatment
- 1-MCP treatmente0
- Outcome
- change in peel colour, softening and glossinesse0
- Direction
- delaye0
- Comparator
- controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“1-MCP treatment resulted in a significant (p< 0.05) delay in change in peel colour, softening and glossiness of fruit as compared to the controls.”
t0“avocado cv. ‘pollock’”
Claim · model-written summary
Cladosporium bioassays found antifungal activity at Rf0.75 in treated and control fruit.
- Taxon
- avocadoPersea americanat0
- Interactor
- Cladosporium funguse0other
- Outcome
- presence of antifungal activitye0
- Value
- Rf0.75e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Bioassays using Cladosporium fungus revealed the presence of antifungal activity at Rf0.75 in both 1-MCP treated and control fruits.”
t0“avocado cv. ‘pollock’”
Claim · model-written summary
1-MCP delayed the decline of antifungal activity during warm ambient storage.
- Taxon
- avocadoPersea americanat0
- Treatment
- 1-MCP treatmente0
- Outcome
- antifungal activity in fruite0
- Direction
- delaying the declinee0
- Qualifier
- warmer ambient conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“1-MCP treatment was effective in delaying the decline of antifungal activity in fruit apparently along with the delay of other ripening-related changes and minimizing losses encountered during storage under warmer ambient conditions.”
t0“avocado cv. ‘pollock’”
Claim · model-written summary
1-MCP delayed ripening-related changes and minimized storage losses.
- Taxon
- avocadoPersea americanat0
- Treatment
- 1-MCP treatmente0
- Outcome
- other ripening-related changes and minimizing lossese0
- Direction
- delaye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“1-MCP treatment was effective in delaying the decline of antifungal activity in fruit apparently along with the delay of other ripening-related changes and minimizing losses encountered during storage under warmer ambient conditions.”
t0“avocado cv. ‘pollock’”
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