Abstract
A study to compare the response to postharvest chilling (4 °C) for up to 3 weeks of melting-flesh (MF)—FL 90-20, FL 90-21W, and FL 91-16—and nonmelting-flesh (NMF)—`Oro A', FL 90-35C, and FL 90-47C—peach ( Prunus persica L.) genotypes revealed that MF fruit were notably more susceptible to the development of mealiness than NMF types. Cell separation in mealy fruit was demonstrated by the release of mesocarp cells to an aqueous medium, allowing determination of mealiness severity. At a histological level, chilling brought about an impressive expansion of the intercellular spaces in MF mesocarp tissue but did not affect NMF fruit. A decrease in flesh electrical resistance after 1 week of chilling was observed only in MF fruit. However, electrical resistance increased in MF and NMF fruit following 2 and 3 weeks at 4 °C. Electrical resistance also decreased with ripening of MF fruit but did not change when NMF fruit were ripened. Unlike NMF fruit, the MF genotypes FL 90-21W and FL 91-16 showed an increase in respiration rate due to chilling. The rate of ethylene production decreased after 1 week at 4 °C in MF and NMF genotypes. However, two MF and two NMF genotypes exhibited rising ethylene levels after the second week of storage at 4 °C, while ethylene production in one MF and one NMF genotype continued to decline.
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Claims 14
Claim · model-written summary
Melting-flesh peaches were more susceptible to mealiness than nonmelting-flesh types during chilling.
- Taxon
- Peaches
Prunus persicat0 - Material
- MF fruite0
- Treatment
- chillinge1
- Outcome
- development of mealinesse0
- Direction
- more susceptiblee0
- Comparator
- NMF typese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Peaches”
e0“MF fruit were notably more susceptible to the development of mealiness than NMF types”
e1“chilling brought about an impressive expansion of the intercellular spaces in MF mesocarp tissue”
Claim · model-written summary
Mealy peach fruit released mesocarp cells to an aqueous medium, providing a measure of mealiness severity.
- Taxon
- PeachesPrunus persicat0
- Organ / stage
- mesocarp cellse0
- Outcome
- release of mesocarp cells to an aqueous mediume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Peaches”
e0“Cell separation in mealy fruit was demonstrated by the release of mesocarp cells to an aqueous medium, allowing determination of mealiness severity.”
Claim · model-written summary
Chilling expanded intercellular spaces in melting-flesh peach mesocarp.
- Taxon
- PeachesPrunus persicat0
- Material
- MFe0
- Treatment
- chillinge0
- Outcome
- intercellular spacese0
- Direction
- expansione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Peaches”
e0“chilling brought about an impressive expansion of the intercellular spaces in MF mesocarp tissue”
Claim · model-written summary
Chilling did not affect nonmelting-flesh peach mesocarp intercellular spaces.
- Taxon
- PeachesPrunus persicat0
- Material
- NMF fruite0
- Treatment
- chillinge0
- Outcome
- intercellular spacese0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Peaches”
e0“chilling brought about an impressive expansion of the intercellular spaces in MF mesocarp tissue but did not affect NMF fruit”
Claim · model-written summary
Flesh electrical resistance decreased after one week of chilling only in melting-flesh peaches.
- Taxon
- PeachesPrunus persicat0
- Material
- MF fruite0
- Treatment
- chillinge0
- Outcome
- flesh electrical resistancee0
- Direction
- decreasee0
- Qualifier
- after 1 weeke0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Peaches”
e0“A decrease in flesh electrical resistance after 1 week of chilling was observed only in MF fruit”
Claim · model-written summary
Electrical resistance increased in melting-flesh fruit after two and three weeks of chilling.
- Taxon
- PeachesPrunus persicat0
- Material
- MFe0
- Treatment
- chillinge1
- Outcome
- electrical resistancee0
- Direction
- increasede0
- Qualifier
- following 2 and 3 weeks at 4 °Ce0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Peaches”
e0“electrical resistance increased in MF and NMF fruit following 2 and 3 weeks at 4 °C”
e1“chilling brought about an impressive expansion of the intercellular spaces in MF mesocarp tissue”
Claim · model-written summary
Electrical resistance increased in nonmelting-flesh fruit after two and three weeks of chilling.
- Taxon
- PeachesPrunus persicat0
- Material
- NMF fruite0
- Treatment
- chillinge1
- Outcome
- electrical resistancee0
- Direction
- increasede0
- Qualifier
- following 2 and 3 weeks at 4 °Ce0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Peaches”
e0“electrical resistance increased in MF and NMF fruit following 2 and 3 weeks at 4 °C”
e1“chilling brought about an impressive expansion of the intercellular spaces in MF mesocarp tissue”
Claim · model-written summary
Electrical resistance decreased during ripening of melting-flesh peaches.
- Taxon
- PeachesPrunus persicat0
- Material
- MF fruite0
- Treatment
- ripeninge0
- Outcome
- Electrical resistancee0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Peaches”
e0“Electrical resistance also decreased with ripening of MF fruit”
Claim · model-written summary
Electrical resistance did not change during ripening of nonmelting-flesh peaches.
- Taxon
- PeachesPrunus persicat0
- Material
- NMF fruite0
- Treatment
- ripenede0
- Outcome
- Electrical resistancee2
- Direction
- did not changee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Peaches”
e0“did not change when NMF fruit were ripened”
e2“Electrical resistance also decreased with ripening of MF fruit”
Claim · model-written summary
Chilling increased respiration in melting-flesh genotypes FL 90-21W and FL 91-16.
- Taxon
- PeachesPrunus persicat0
- Material
- FL 90-21W and FL 91-16e0
- Treatment
- chillinge0
- Outcome
- respiration ratee0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Peaches”
e0“the MF genotypes FL 90-21W and FL 91-16 showed an increase in respiration rate due to chilling”
Claim · model-written summary
Nonmelting-flesh fruit did not show the chilling-induced respiratory rise.
- Taxon
- PeachesPrunus persicat0
- Material
- NMF fruite0
- Treatment
- chillinge0
- Outcome
- respiration ratee0
- Direction
- Unlikee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Peaches”
e0“Unlike NMF fruit, the MF genotypes FL 90-21W and FL 91-16 showed an increase in respiration rate due to chilling”
Claim · model-written summary
Ethylene production decreased after one week at 4 °C in both flesh types.
- Taxon
- PeachesPrunus persicat0
- Treatment
- chillinge1
- Outcome
- rate of ethylene productione0
- Direction
- decreasede0
- Qualifier
- after 1 week at 4 °Ce0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Peaches”
e0“The rate of ethylene production decreased after 1 week at 4 °C in MF and NMF genotypes”
e1“chilling brought about an impressive expansion of the intercellular spaces in MF mesocarp tissue”
Claim · model-written summary
Ethylene rose after the second week in two melting-flesh and two nonmelting-flesh genotypes.
- Taxon
- PeachesPrunus persicat0
- Treatment
- chillinge1
- Outcome
- ethylene levelse0
- Direction
- risinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Peaches”
e0“two MF and two NMF genotypes exhibited rising ethylene levels after the second week of storage at 4 °C”
e1“chilling brought about an impressive expansion of the intercellular spaces in MF mesocarp tissue”
Claim · model-written summary
Ethylene production continued to decline in one genotype of each flesh type.
- Taxon
- PeachesPrunus persicat0
- Treatment
- chillinge1
- Outcome
- ethylene productione0
- Direction
- declinee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Peaches”
e0“ethylene production in one MF and one NMF genotype continued to decline”
e1“chilling brought about an impressive expansion of the intercellular spaces in MF mesocarp tissue”
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