Abstract
Navel oranges are reportedly susceptible to postharvest peel disorders, including chilling injury and aging/stem end rind breakdown. These and other physiological disorders are sometimes given the common term “navel rind breakdown.” California citrus industry reports on recent incidences of navel rind breakdown suggested that some instances of this disorder were similar to “postharvest pitting,” a disorder that we have observed in a number of Florida citrus varieties. Thus, we decided to define the morphology and etiology of pitting of `Washington' navel orange ( Citrus sinensis L.) peel. The disorder was characterized by the collapse of clusters of oil glands and was stimulated by wax application and high temperature (≥13 °C) storage. Internal ethanol levels of waxed fruit stored at high temperature (13 or 21 °C) were significantly higher among fruit that developed pitting than those that did not. The pitting observed in these studies is comparable to previously observed navel orange disorders that have occurred without known cause. Navel orange pitting is morphologically and etiologically distinct from chilling injury and aging/stem end rind breakdown, but is similar to postharvest pitting of Florida citrus fruit.
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Claims 7
Claim · model-written summary
Pitting involved collapse of clusters of oil glands.
- Taxon
- Navel Orange
Citrus sinensist0 - Organ / stage
- oil glandse0
- Outcome
- collapse of clusters of oil glandse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The disorder was characterized by the collapse of clusters of oil glands”
t0“Navel Orange”
Claim · model-written summary
Wax application stimulated navel orange pitting.
- Taxon
- Navel OrangeCitrus sinensist0
- Treatment
- wax applicatione0
- Outcome
- Pittingt0
- Direction
- stimulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“was stimulated by wax application and high temperature (≥13 °C) storage”
t0“Navel Orange Pitting”
Claim · model-written summary
High-temperature storage stimulated navel orange pitting.
- Taxon
- Navel OrangeCitrus sinensist0
- Treatment
- high temperature (≥13 °C) storagee0
- Outcome
- Pittingt0
- Direction
- stimulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“was stimulated by wax application and high temperature (≥13 °C) storage”
t0“Navel Orange Pitting”
Claim · model-written summary
Among waxed fruit at high temperature, ethanol was higher in pitted fruit.
- Taxon
- Navel OrangeCitrus sinensist0
- Organ / stage
- fruite0
- Treatment
- waxede0
- Outcome
- Internal ethanol levelse0
- Direction
- highere0
- Qualifier
- stored at high temperature (13 or 21 °C)e0
- Comparator
- those that did note0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Internal ethanol levels of waxed fruit stored at high temperature (13 or 21 °C) were significantly higher among fruit that developed pitting than those that did not”
t0“Navel Orange”
Claim · model-written summary
Observed pitting was comparable to earlier navel orange disorders of unknown cause.
- Taxon
- navel orangeCitrus sinensise0
- Outcome
- pitting observed in these studiese0
- Comparator
- previously observed navel orange disorderse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The pitting observed in these studies is comparable to previously observed navel orange disorders that have occurred without known cause”
Claim · model-written summary
Navel orange pitting was distinct from chilling injury and aging/stem end rind breakdown.
- Taxon
- Navel orangeCitrus sinensise0
- Outcome
- pittinge0
- Comparator
- chilling injury and aging/stem end rind breakdowne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Navel orange pitting is morphologically and etiologically distinct from chilling injury and aging/stem end rind breakdown”
Claim · model-written summary
Navel orange pitting resembled postharvest pitting of Florida citrus fruit.
- Taxon
- Navel OrangeCitrus sinensist0
- Outcome
- Pittingt0
- Comparator
- postharvest pitting of Florida citrus fruite0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but is similar to postharvest pitting of Florida citrus fruit”
t0“Navel Orange Pitting”