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Influence of a Preharvest Melatonin Application on Postharvest Chilling Injury in Basil (Ocimum basilicum L.)

Karin Albornoz
Karin Albornoz
, 
Rodrigo Rosas
Rodrigo Rosas
 et 
María D. López
María D. López
   | 11 déc. 2023
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Publié en ligne: 11 déc. 2023
Pages: 97 - 104
Reçu: 01 sept. 2023
DOI: https://doi.org/10.2478/johr-2023-0025
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© 2023 Karin Albornoz et al., published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.

Figure 1.

External changes of control (MT0) and melatonin-treated (MT400) basil leaves during cold storage, visual progress of PCI symptoms (A), close view of leaf PCI (B), symptoms shown with red arrows, discoloration and darkening (left), darkening and water loss (right), CII (scale 1–5) (C), symptom area (%) (D), violin/jitter plots of data distribution, *(p < 0.05) by Kruskal–Wallis test, objective color descriptors (E), violin plots of data distribution, **(p < 0.01), ***(p < 0.001) by unpaired t-test; NS – nonsignificant
External changes of control (MT0) and melatonin-treated (MT400) basil leaves during cold storage, visual progress of PCI symptoms (A), close view of leaf PCI (B), symptoms shown with red arrows, discoloration and darkening (left), darkening and water loss (right), CII (scale 1–5) (C), symptom area (%) (D), violin/jitter plots of data distribution, *(p < 0.05) by Kruskal–Wallis test, objective color descriptors (E), violin plots of data distribution, **(p < 0.01), ***(p < 0.001) by unpaired t-test; NS – nonsignificant

Figure 2.

Compositional changes of control (MT0) and melatonin-treated (MT400) basil leaves during cold storage, violin plots of data distribution, leaves were stored for 0 (D0) and 12 (D12) days at 3.5 ± 1 °C, MDA content (A), TP content (B), expressed as mg gallic acid per 100 mg sample, *(p < 0.05); ***(p < 0.001) by unpaired t-test, NS – nonsignificant
Compositional changes of control (MT0) and melatonin-treated (MT400) basil leaves during cold storage, violin plots of data distribution, leaves were stored for 0 (D0) and 12 (D12) days at 3.5 ± 1 °C, MDA content (A), TP content (B), expressed as mg gallic acid per 100 mg sample, *(p < 0.05); ***(p < 0.001) by unpaired t-test, NS – nonsignificant

Figure 3.

Partial least-squares discriminant analysis of visual and physiological parameters of control (MT0) and melatonin-treated (MT400) basil leaves during cold storage, scores plot, leaves were stored for 0 (D0) and 12 (D12) days at 3.5 ± 1 °C, data were normalized (square root transformation) and displayed at 95% confidence region, each color represents a treatment, the first two components account for 95.7% of the variance
Partial least-squares discriminant analysis of visual and physiological parameters of control (MT0) and melatonin-treated (MT400) basil leaves during cold storage, scores plot, leaves were stored for 0 (D0) and 12 (D12) days at 3.5 ± 1 °C, data were normalized (square root transformation) and displayed at 95% confidence region, each color represents a treatment, the first two components account for 95.7% of the variance

Total soluble solids (°Brix) of control (MT0) and melatonin-treated (MT400) basil leaves during cold storage

D0 D12
MT0 4.08 ± 0.17Aa 4.42 ± 0.20Aa
MT400 3.98 ± 0.07Ab 4.87 ± 0.21Aa

Electrolyte leakage (%) of control (MT0) and melatonin-treated (MT400) basil leaves during cold storage

D0 D12
MT0 16.2 ± 2.5Ab 33.7 ± 6.7Aa
MT400 16.1 ± 0.8Ab 33.4 ± 9.7Aa
eISSN:
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Langue:
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Life Sciences, Biotechnology, Plant Science, Ecology, other
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