Abstract
The potential for the ethylene binding inhibitor, 1-methylcyclopropene, to delay ripening of ‘Hass’ avocado, ‘African Pride’ custard apple, ‘Kensington Pride’ mango and ‘Solo’ papaya was examined. Fruit were gassed with 25 µL/L 1-methylcyclopropene for 14 h at 20°C, followed by treatment with 100 µL/L ethylene for 24 h, and then ripened at 20°C. Ethylene treatment alone generally halved the number of days for fruit to reach the ripe stage, compared with untreated fruit. 1-Methylcyclopropene treatment alone increased the number of days to ripening by 4.4 days (40% increase), 3.4 days (58%), 5.1 days (37%) and 15.6 days (325%) for avocado, custard apple, mango and papaya, respectively, compared with untreated fruit. Applying 1-methylcyclopropene to the fruit before ethylene prevented the accelerated ripening normally associated with ethylene treatment, so that the number of days to ripening for fruit treated with 1-methylcyclopropene plus ethylene was similar to the number of days to ripening for fruit treated with 1-methylcyclopropene alone. 1-Methylcyclopropene treatment was associated with slightly higher severity of external blemishes in papaya and custard apple, slightly higher rots severity in avocado, custard apple and papaya, and at least double the severity of stem rots in mango, relative to fruit not treated with 1-methylcyclopropene. Thus, 1-methylcyclopropene treatment has the potential to reduce the risk of premature ripening of avocado, custard apple, mango and papaya fruit due to accidental exposure to ethylene. However, additional precautions may be necessary to reduce disease severity associated with 1-methylcyclopropene treatment.
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Claims 15
Claim · model-written summary
Ethylene treatment generally halved days to ripeness across the four fruit crops versus untreated fruit.
Verbatim
e0“Ethylene treatment alone generally halved the number of days for fruit to reach the ripe stage, compared with untreated fruit.”
t0“avocado, custard apple, mango and papaya fruit”
Claim · model-written summary
1-methylcyclopropene delayed avocado ripening by 4.4 days (40% increase) versus untreated fruit.
- Taxon
- avocado
Persea americanae0 - Treatment
- 1-Methylcyclopropene treatment alonee0
- Outcome
- number of days to ripeninge0
- Direction
- increasede0
- Value
- 4.4 days (40% increase)e0
- Comparator
- untreated fruite0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“1-Methylcyclopropene treatment alone increased the number of days to ripening by 4.4 days (40% increase), 3.4 days (58%), 5.1 days (37%) and 15.6 days (325%) for avocado, custard apple, mango and papaya, respectively, compared with untreated fruit.”
Claim · model-written summary
1-methylcyclopropene delayed custard apple ripening by 3.4 days (58%) versus untreated fruit.
Verbatim
e0“1-Methylcyclopropene treatment alone increased the number of days to ripening by 4.4 days (40% increase), 3.4 days (58%), 5.1 days (37%) and 15.6 days (325%) for avocado, custard apple, mango and papaya, respectively, compared with untreated fruit.”
Claim · model-written summary
1-methylcyclopropene delayed mango ripening by 5.1 days (37%) versus untreated fruit.
- Taxon
- mango
_from_India.jpg?width=60)
Mangifera indicae0 - Treatment
- 1-Methylcyclopropene treatment alonee0
- Outcome
- number of days to ripeninge0
- Direction
- increasede0
- Value
- 5.1 days (37%)e0
- Comparator
- untreated fruite0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_from_India.jpg?width=500)
Verbatim
e0“1-Methylcyclopropene treatment alone increased the number of days to ripening by 4.4 days (40% increase), 3.4 days (58%), 5.1 days (37%) and 15.6 days (325%) for avocado, custard apple, mango and papaya, respectively, compared with untreated fruit.”
Claim · model-written summary
1-methylcyclopropene delayed papaya ripening by 15.6 days (325%) versus untreated fruit.
- Taxon
- papaya
_-_DPLA_-_55200ec009622d7d42349f3583df310e.jpg?width=60)
Carica papayae0 - Treatment
- 1-Methylcyclopropene treatment alonee0
- Outcome
- number of days to ripeninge0
- Direction
- increasede0
- Value
- 15.6 days (325%)e0
- Comparator
- untreated fruite0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_-_DPLA_-_55200ec009622d7d42349f3583df310e.jpg?width=500)
Verbatim
e0“1-Methylcyclopropene treatment alone increased the number of days to ripening by 4.4 days (40% increase), 3.4 days (58%), 5.1 days (37%) and 15.6 days (325%) for avocado, custard apple, mango and papaya, respectively, compared with untreated fruit.”
Claim · model-written summary
1-methylcyclopropene before ethylene prevented ethylene accelerated ripening across the four fruit crops.
Verbatim
e0“Applying 1-methylcyclopropene to the fruit before ethylene prevented the accelerated ripening normally associated with ethylene treatment, so that the number of days to ripening for fruit treated with 1-methylcyclopropene plus ethylene was similar to the number of days to ripening for fruit treated with 1-methylcyclopropene alone.”
t0“avocado, custard apple, mango and papaya fruit”
Claim · model-written summary
Days to ripening with combined 1-methylcyclopropene and ethylene were similar to 1-methylcyclopropene alone across the four fruit crops.
Verbatim
e0“Applying 1-methylcyclopropene to the fruit before ethylene prevented the accelerated ripening normally associated with ethylene treatment, so that the number of days to ripening for fruit treated with 1-methylcyclopropene plus ethylene was similar to the number of days to ripening for fruit treated with 1-methylcyclopropene alone.”
t0“avocado, custard apple, mango and papaya fruit”
Claim · model-written summary
1-methylcyclopropene was associated with slightly higher external blemish severity in papaya.
- Taxon
- papayaCarica papayae0
- Treatment
- 1-Methylcyclopropene treatmente0
- Outcome
- severity of external blemishese0
- Direction
- slightly highere0
- Comparator
- fruit not treated with 1-methylcyclopropenee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“1-Methylcyclopropene treatment was associated with slightly higher severity of external blemishes in papaya and custard apple, slightly higher rots severity in avocado, custard apple and papaya, and at least double the severity of stem rots in mango, relative to fruit not treated with 1-methylcyclopropene.”
Claim · model-written summary
1-methylcyclopropene was associated with slightly higher external blemish severity in custard apple.
Verbatim
e0“1-Methylcyclopropene treatment was associated with slightly higher severity of external blemishes in papaya and custard apple, slightly higher rots severity in avocado, custard apple and papaya, and at least double the severity of stem rots in mango, relative to fruit not treated with 1-methylcyclopropene.”
Claim · model-written summary
1-methylcyclopropene was associated with slightly higher rot severity in avocado.
- Taxon
- avocadoPersea americanae0
- Treatment
- 1-Methylcyclopropene treatmente0
- Outcome
- rots severitye0
- Direction
- slightly highere0
- Comparator
- fruit not treated with 1-methylcyclopropenee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“1-Methylcyclopropene treatment was associated with slightly higher severity of external blemishes in papaya and custard apple, slightly higher rots severity in avocado, custard apple and papaya, and at least double the severity of stem rots in mango, relative to fruit not treated with 1-methylcyclopropene.”
Claim · model-written summary
1-methylcyclopropene was associated with slightly higher rot severity in custard apple.
Verbatim
e0“1-Methylcyclopropene treatment was associated with slightly higher severity of external blemishes in papaya and custard apple, slightly higher rots severity in avocado, custard apple and papaya, and at least double the severity of stem rots in mango, relative to fruit not treated with 1-methylcyclopropene.”
Claim · model-written summary
1-methylcyclopropene was associated with slightly higher rot severity in papaya.
- Taxon
- papayaCarica papayae0
- Treatment
- 1-Methylcyclopropene treatmente0
- Outcome
- rots severitye0
- Direction
- slightly highere0
- Comparator
- fruit not treated with 1-methylcyclopropenee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“1-Methylcyclopropene treatment was associated with slightly higher severity of external blemishes in papaya and custard apple, slightly higher rots severity in avocado, custard apple and papaya, and at least double the severity of stem rots in mango, relative to fruit not treated with 1-methylcyclopropene.”
Claim · model-written summary
1-methylcyclopropene was associated with at least doubled stem rot severity in mango.
- Taxon
- mangoMangifera indicae0
- Treatment
- 1-Methylcyclopropene treatmente0
- Outcome
- severity of stem rotse0
- Direction
- at least doublee0
- Comparator
- fruit not treated with 1-methylcyclopropenee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“1-Methylcyclopropene treatment was associated with slightly higher severity of external blemishes in papaya and custard apple, slightly higher rots severity in avocado, custard apple and papaya, and at least double the severity of stem rots in mango, relative to fruit not treated with 1-methylcyclopropene.”
Claim · model-written summary
The authors conclude that 1-methylcyclopropene can reduce premature ripening from accidental ethylene exposure in the four fruits.
Verbatim
e0“1-methylcyclopropene treatment has the potential to reduce the risk of premature ripening of avocado, custard apple, mango and papaya fruit due to accidental exposure to ethylene.”
Claim · model-written summary
The authors advise additional precautions to reduce disease severity associated with 1-methylcyclopropene.
Verbatim
e0“additional precautions may be necessary to reduce disease severity associated with 1-methylcyclopropene treatment.”
t0“avocado, custard apple, mango and papaya fruit”
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See all 14 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.