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Folia Horticulturae
Volume 33 (2021): Numero 2 (December 2021)
Accesso libero
Reduction of chilling injury of ‘Washington’ navel orange fruits by melatonin treatments during cold storage
M. S. Aboryia
M. S. Aboryia
,
A. A. Lo’ay
A. A. Lo’ay
e
Asmaa S. M. Omar
Asmaa S. M. Omar
| 13 dic 2021
Folia Horticulturae
Volume 33 (2021): Numero 2 (December 2021)
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Article Category:
Original Article
Pubblicato online:
13 dic 2021
Pagine:
343 - 353
Ricevuto:
17 ago 2021
Accettato:
02 nov 2021
DOI:
https://doi.org/10.2478/fhort-2021-0026
Parole chiave
antioxidant enzymes activities
,
ascorbic acid
,
catalase
,
ion leakage
,
peel colour
,
superoxide anion
,
water loss
© 2021 M. S. Aboryia et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
Figure 1
The effect of ME treatment at four different concentrations on (CI-index), water loss% and fruit peel colour (h°) of ‘Washington’ navel orange fruits during cold storage at (4 ± 1 °C and 95 ± 1% RH) for (4 weeks). The vertical bars represent standard error (±SE of n = 3) and the alphabetical letters pointed to the significance at p = 0.05 between treatments in each storage period. The average of both experimental seasons (2019 and 2020) was analysed by using Duncan's Multiple Range Test. CI, chilling injury; ME, melatonin.
Figure 2
The effect of ME treatment at four different concentrations on (SSC%), (TA%), and SSC/TA-ratio of ‘Washington’ navel orange fruits during cold storage at (4 ± 1°C and 95 ± 1% RH) for (4 weeks). The vertical bars represent standard error (±SE of n = 3) and the alphabetical letters pointed to the significance at p ≤ 0.05 between treatments in each storage period. The average of both experimental seasons (2019 and 2020) was analysed by using Duncan's Multiple Range Test. ME, melatonin; SSC%, soluble solid content; TA%, total acidity.
Figure 3
The effect of ME treatment at four different concentrations on AEAs of ‘Washington’ navel orange during cold storage at (4 ± 1°C and 95 ± 1% RH) for (4 weeks). The vertical bars represent standard error (±SE of n = 3) and the alphabetical letters pointed to the significance at p ≤ 0.05 between treatments in each storage period. The values are the average of both tested seasons (2019 and 2020) was analysed by using Duncan's Multiple Range Test. AEAs, antioxidant enzymes activities; ME, melatonin.
Figure 4
The effect of ME treatment at four different concentrations on the MDA accumulation (μM · g−1 FW), (IL%), AA content (mg · 100 g−1 FW) of ‘Washington’ navel orange during cold storage at (4 ± 1°C and 95 ± 1% RH) for (4 weeks). The vertical bars represent the standard error (±SE of n = 3) and the alphabetical letters pointed out the significance at p ≤ 0.05 between treatments in each storage period. The values are the average of both tested seasons (2019 and 2020) was analysed by using Duncan's Multiple Range Test. MDA, malondialdehyde; ME, melatonin.
Figure 5
Shows DPPH reduction%, O2•− (mmol · min−1 · g−1 FW), and H2O2 (mmol · min−1 · g−1 FW) of ‘Washington’ navel orange during cold storage at (4 ± 1 °C and 95 ± 1% RH) for (4 weeks). The vertical bars represent the standard error (±SE of n = 3) and the alphabetical letters pointed out the significance at p ≤ 0.05 between treatments in each storage period. The values are the average of both tested seasons (2019 and 2020) was analysed by using Duncan's Multiple Range Test. DPPH, diphenyl-1-picrylhydrazyl; FW, fresh weight.
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