Effect of Melatonin, Ga3 and Naa on Vegetative Growth, Yield and Quality of ‘Canino’ Apricot Fruits

El-Naby, Saied Kamel Mohamed Abd; Mohamed, Amr Abdelkhalek Ahmed; El-Naggar, Y. I.

doi:10.24326/asphc.2019.3.16

Cited by 22 publications

(16 citation statements)

References 2 publications

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“…Thus, tomato plant treatment with melatonin, applied in the irrigation system led to increases in lycopene and sugar contents, showing acceleration of the fruit ripening process ( Liu et al, 2016 ). However, melatonin treatment by foliar spray of apricot trees did not affect the on-tree ripening process although positive effects were observed on crop yield and fruit quality parameters at harvest, which were maintained during storage, either at chilling or non-chilling temperatures, as compared with apricots from control trees ( Abd El-Naby et al, 2019 ; Medina-Santamarina et al, 2021 ). Similar effects of melatonin pre-harvest treatments have been reported recently for ‘Mollar de Elche’ pomegranate ( Lorente-Mento et al, 2021 ).…”

Section: Introductionmentioning

confidence: 86%

Melatonin Pre-harvest Treatments Leads to Maintenance of Sweet Cherry Quality During Storage by Increasing Antioxidant Systems

et al. 2022

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Melatonin has been reported to have an important role in fruit ripening, although the effect of pre-harvest melatonin treatment on sweet cherry quality properties during storage is still unknown. In the present experiments, the effects of melatonin (0.1, 0.3, and 0.5 Mm) by foliar spray treatments of ‘Prime Giant’ and ‘Sweet Heart’ sweet cherry trees on fruit quality traits and antioxidants systems during storage was evaluated. Results showed that these treatments reduced weight losses during storage, as well as losses in firmness and titratable acidity. In addition, changes in fruit colour and total soluble solid content were also delayed in fruit from melatonin treated trees with respect to controls. Moreover, in general, total phenolic and anthocyanin concentrations were higher in fruit from treated trees than in those from control ones, either at harvest or during the whole storage period. Finally, the activity of the antioxidant enzymes catalase, ascorbate peroxidase and peroxidase was also enhanced as a consequence of melatonin treatment. Overall results show that pre-harvest melatonin treatment delayed the post-harvest ripening process of sweet cherry fruit, leading to maintenance of their quality properties in optimum levels for consumption 2 weeks more with respect to fruit from control trees. Antioxidant systems, both enzymatic and non-enzymatic ones, were also enhanced by melatonin treatments, which would account for the delay on fruit post-harvest ripening process and fruit quality maintenance during storage.

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Section: Introductionmentioning

confidence: 86%

Melatonin Pre-harvest Treatments Leads to Maintenance of Sweet Cherry Quality During Storage by Increasing Antioxidant Systems

et al. 2022

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“…In 2019, 3 blocks of 3 trees were selected for each treatment: control (distilled water) and melatonin (purchased from Sigma, Sigma-Aldrich, Madrid) at 0.1, 0.3 and 0.5 mM. These concentrations were chosen according to previous reports in which the effect of melatonin, applied as preharvest treatment, on quality properties of other fruit species was assayed [ 31 , 32 , 33 , 34 ]. Two litres per tree of freshly prepared solutions (containing 0.1% Tween 20) were applied to pomegranate trees with a mechanical mist sprayer, which was enough to wet the entire tree canopy.…”

Section: Methodsmentioning

confidence: 99%

“…On the contrary, irrigation of tomato plant with 0.1 mM of melatonin increased sugar content and lycopene concentration in fruits, showing a positive effect on fruit ripening [ 32 ]. In apricot, foliar spray melatonin treatment increased yield and fruit weight, although no effect on on-tree ripening was observed [ 33 ]. In addition, increased apricot quality parameters at harvest and maintenance during storage have been found as a consequence of melatonin tree treatment during fruit development [ 34 ].…”

Section: Introductionmentioning

confidence: 99%

Melatonin Treatment to Pomegranate Trees Enhances Fruit Bioactive Compounds and Quality Traits at Harvest and during Postharvest Storage

et al. 2021

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The effect of melatonin pomegranate tree treatments on fruit quality and bioactive compounds with antioxidant activity at harvest and during storage at 10 °C for 60 days was assayed in two consecutive years, 2019 and 2020. In the first year, trees were treated with 0.1, 0.3 and 0.5 mM of melatonin along the developmental fruit growth cycle, and results showed that bioactive compounds (total phenolics and total and individual anthocyanins) and antioxidant activity at harvest were higher in fruits from melatonin-treated trees than in controls. Other fruit quality parameters, such as firmness, total soluble solids and aril red colour, were also increased as a consequence of melatonin treatment. In fruit from control tress, firmness and acidity levels decreased during storage, while increases occurred on total soluble solids, leading to fruit quality reductions. These changes were delayed, and even maintenance of total acidity was observed, in fruit from melatonin-treated trees with respect to controls, resulting in a fruit shelf-life increase. Moreover, concentration of phenolics and anthocyanins and antioxidant activity were maintained at higher levels in treated than in control fruits during the whole storage period. In general, all the mentioned effects were found at the highest level with the 0.1 mM melatonin dose, and then it was selected for repeating the experiment in the second year and results of the first year were confirmed. Thus, 0.1 mM melatonin treatment could be a useful tool to enhance aril content on bioactive compounds with antioxidant activity and health beneficial effects and to improve quality traits of pomegranate fruit, at harvest and during postharvest storage.

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“…These authors attributed this effect to an increase of the sink strength of the berry, leading the fruit to uptake more sugars and develop a larger size at harvest. On the other hand, melatonin foliar spray treatment increased fruit weight and yield for 'Canino' apricot [12]. In addition, we have found increased crop yield 'Colorado' and 'Mikado' apricot cultivars after melatonin treatment (unpublished data), which were attributed to increases in tree net photosynthesis, due to enhanced total chlorophyll and leaf area.…”

Section: Discussionmentioning

confidence: 69%

“…In two cherry cultivars ('Hondeng' and 'Rainier'), melatonin was evaluated during the growth cycle, and a maximum peak at stage 2 was found, which coincided with endocarp lignification in both cherry cultivars [9] and in 'Prime Giant' sweet cherry, melatonin 0.1 and 0.01 mM applied at pit hardening inhibited fruit ripening [10]. However, irrigation of tomato plants with 0.1 mM melatonin increased sugar and lycopene concentration in fruits, showing a positive effect on fruit ripening [11], while, in apricots, foliar spray melatonin treatment increased yield and fruit weight, although no effect on on-tree ripening was observed [12].…”

Section: Introductionmentioning

confidence: 90%

Melatonin Treatment of Pomegranate Trees Increases Crop Yield and Quality Parameters at Harvest and during Storage

et al. 2021

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With the aim to study the effect of melatonin treatment of pomegranate trees on crop yield and fruit quality at harvest and during storage, two experiments were carried out in two consecutive years: 2017 and 2018. In the first year, trees were treated with melatonin (at 0.1 and 1 mM) along the developmental growth cycle and fruit quality parameters were evaluated at harvest and during storage at 10 °C for 90 days. Treatments with melatonin led to an increase of crop yield (number of fruits per tree and kg per tree), as well as higher fruit quality attributes, such as fruit size (diameter and weight), color, total soluble solids (TSS), and total acidity (TA), especially with the 0.1 mM dose. Then, in the second year, melatonin at 0.1 mM was selected for repeating the pre-harvest treatments with similar results in terms of crop yield and fruit quality parameters. During storage, pomegranate fruit treated with 0.1 mM melatonin maintained higher quality attributes than controls, such as TSS, TA, and firmness and lower weight losses were observed in fruit from treated trees, in both trials. In addition, the content of the major sugars (glucose and fructose) and organic acids (malic, succinic and ascorbic acid) were higher in melatonin-treated than in non-treated fruit. These results suggest that pre-harvest melatonin treatment could be a useful tool to increase pomegranate crop yield as well as fruit quality parameters at harvest and their maintenance during storage due to an effect of melatonin on reducing the postharvest ripening process.

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Effect of Melatonin, Ga3 and Naa on Vegetative Growth, Yield and Quality of ‘Canino’ Apricot Fruits

Cited by 22 publications

References 2 publications

Melatonin Pre-harvest Treatments Leads to Maintenance of Sweet Cherry Quality During Storage by Increasing Antioxidant Systems

Melatonin Pre-harvest Treatments Leads to Maintenance of Sweet Cherry Quality During Storage by Increasing Antioxidant Systems

Melatonin Treatment to Pomegranate Trees Enhances Fruit Bioactive Compounds and Quality Traits at Harvest and during Postharvest Storage

Melatonin Treatment of Pomegranate Trees Increases Crop Yield and Quality Parameters at Harvest and during Storage

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