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Reduction of chilling injury of ‘Washington’ navel orange fruits by melatonin treatments during cold storage Cover

Reduction of chilling injury of ‘Washington’ navel orange fruits by melatonin treatments during cold storage

Folia Horticulturae
Volume 33 (2021): Issue 2 (December 2021)
By: M. S. Aboryia,  A. A. Lo’ay and  Asmaa S. M. Omar  
Open Access
|Dec 2021

Figures & Tables

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.
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.
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.
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.
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.
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.
DOI: https://doi.org/10.2478/fhort-2021-0026 | Journal eISSN: 2083-5965 | Journal ISSN: 0867-1761
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Language: English
Page range: 343 - 353
Submitted on: Aug 17, 2021
|
Accepted on: Nov 2, 2021
|
Published on: Dec 13, 2021
Published by: Polish Society for Horticultural Sciences (PSHS)
In partnership with: Paradigm Publishing Services
Publication frequency: 2 issues per year
Keywords:
antioxidant enzymes activities,
ascorbic acid,
catalase,
ion leakage,
peel colour,
superoxide anion,
water loss
Related subjects:
Life sciences,
Plant science,
Zoology,
Ecology,
Life sciences, other

© 2021 M. S. Aboryia, A. A. Lo’ay, Asmaa S. M. Omar, published by Polish Society for Horticultural Sciences (PSHS)
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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