Thinning flat peaches with ethephon and its effect on endogenous ethylene production and fruit quality

Torres, Estanis; Giné-Bordonaba, Jordi; Asín, L.

doi:10.1016/j.scienta.2020.109872

Cited by 13 publications

(6 citation statements)

References 34 publications

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“…Notably, ethephon applied at 10% LF stimulated an ethylene spike in the flower buds two days after application, followed by a rapid decrease. This result is consistent with a recent study [ 36 ] in which ethylene evolution in peach flowers and fruitlets exhibited similar dynamics in response to foliar application of ethephon, which induces fruit abscission. Likely, it is this transient increase of ethylene in the flower buds that exert effects on the subsequent phenological and physiological processes.…”

Section: Discussionsupporting

confidence: 93%

Ethylene-Mediated Modulation of Bud Phenology, Cold Hardiness, and Hormone Biosynthesis in Peach (Prunus persica)

Liu

Islam

Sapkota

et al. 2021

Plants

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Spring frosts exacerbated by global climate change have become a constant threat to temperate fruit production. Delaying the bloom date by plant growth regulators (PGRs) has been proposed as a practical frost avoidance strategy. Ethephon is an ethylene-releasing PGR found to delay bloom in several fruit species, yet its use is often coupled with harmful effects, limiting its applicability in commercial tree fruit production. Little information is available regarding the mechanisms by which ethephon influences blooming and bud dormancy. This study investigated the effects of fall-applied ethephon on bud phenology, cold hardiness, and hormonal balance throughout the bud dormancy cycle in peach. Our findings concluded that ethephon could alter several significant aspects of peach bud physiology, including accelerated leaf fall, extended chilling accumulation period, increased heat requirements, improved cold hardiness, and delayed bloom date. Ethephon effects on these traits were primarily dependent on its concentration and application timing, with a high concentration (500 ppm) and an early application timing (10% leaf fall) being the most effective. Endogenous ethylene levels were induced significantly in the buds when ethephon was applied at 10% versus 90% leaf fall, indicating that leaves are essential for ethephon uptake. The hormonal analysis of buds at regular intervals of chilling hours (CH) and growing degree hours (GDH) also indicated that ethephon might exert its effects through an abscisic acid (ABA)-independent way in dormant buds. Instead, our data signifies the role of jasmonic acid (JA) in mediating budburst and bloom in peach, which also appears to be influenced by ethephon treatment. Overall, this research presents a new perspective in interpreting horticultural traits in the light of biochemical and molecular data and sheds light on the potential role of JA in bud dormancy, which deserves further attention in future studies that aim at mitigating spring frosts.

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Section: Discussionsupporting

confidence: 93%

Ethylene-Mediated Modulation of Bud Phenology, Cold Hardiness, and Hormone Biosynthesis in Peach (Prunus persica)

Liu

Islam

Sapkota

et al. 2021

Plants

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“…Therefore, in this study, we supposed that 1‐MCP could inhibit ethylene synthesis by competing with ethylene receptor sites of peach fruits during storage. When NC‐1 was added in 1‐MCP, the ability to compete for ethylene sites was enhanced (Xu et al ., 2016; Torres et al ., 2021); secondly, the inhibitory effect of biotic stress genes expression may be enhanced after combining NC‐1 with 1‐MCP. Given that POD, PAL and PPO play essential roles in maintaining antioxidant pools in diverse physiological events such as plant senescence and stress response, future experiments should be investigated to decipher the mechanism by which the activities and/or genes of these enzymes are regulated.…”

Section: Resultsmentioning

confidence: 99%

NC‐1 coating combined with 1‐MCP treatment maintains better fruit qualities in honey peach during low‐temperature storage

Zhang

Jing

Chen

et al. 2021

Int J of Food Sci Tech

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The effect of carnauba wax-based nanoemulsion coating-1 (NC-1) combined with 1-methylcyclopropene (1-MCP) treatment on the storage of honey peach fruit 'Yulupantao' for 28 days under 0 AE 0.5 °C, and 90% RH conditions was studied. The results showed that NC-1 or 1-MCP treatment alone and in combination were proved to be more effective in maintaining fruit qualities compared to the control group with no treatment. However, the application with the combination of NC-1 and 1-MCP treatment had the most significant effect on reducing mass loss and decay rate, maintaining firmness, total soluble solids (TSS), ascorbic acid (AsA) and titratable acid (TA) contents, suppressing malondialdehyde (MDA) accumulation and conductivity ascend. Moreover, the activities of peroxidase (POD) were maintained, and polyphenol oxidase (PPO) and phenylalanine ammonialyase (PAL) were effectively suppressed in NC-1, 1-MCP and combined treatment than that of control. Therefore, the combination of NC-1 and 1-MCP treatment could be an efficient way to maintain the qualities of peach fruit during low-temperature storage after harvest.

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“…This explains the fruit detachment of 5.2 ± 2.5% observed in the untreated bunches after 24 h (Figure 1E). Similarly, the release of endogenous ethylene after postharvest fruit abscission has been reported in bananas, [24], apples [25], and peaches [26], mainly during the ripening process. However, it was unlikely that the small amount of endogenous ethylene had any significant impact in this study, as enhanced fruit detachment was only achieved in the ethephontreated bunches.…”

Section: Effect Of Ethephon Treatment On Fresh Fruit Bunchesmentioning

confidence: 66%

Postharvest Fruit Detachment in Oil Palm Bunches with Ethephon and Ethylene Gas Application

Balakrishnan¹,

Zakaria²,

Tan³

et al. 2021

Agriculture

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The processing of oil palm fresh fruit bunches (FFB), together with loose fruits, in the current mill operation contributes to oil loss and high free fatty acids (FFA), affecting crude palm oil quality. Fruit detachment induced by ethephon and ethylene may mitigate the current processing issues. This study shows that a 0.50% (v/v) ethephon application by the evaporation method induced the highest fruit detachment of 30.8 ± 1.1% after 24 h at room temperature, with the FFA content in the extracted crude palm oil at 0.34 ± 0.09%. Ethephon application was effective on bunches between 14 and 28 kg, and fruit detachment was higher in ripe and underripe bunches at 24.1 ± 0.9% and 23.2 ± 0.1%, respectively. A significant fruit detachment of 47.2 ± 2.4% was achieved when the bunches were also stripped mechanically, but the FFA content increased almost 4-fold, from 1.0 ± 0.2% to 3.8 ± 1.2%. The application of ethylene gas at 750 ppm yielded 29.4 ± 1.9% fruit detachment. The findings present the possibility of using ethylene as an indirect method for minimizing oil loss without increasing the FFA content in future crude palm oil production systems.

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Thinning flat peaches with ethephon and its effect on endogenous ethylene production and fruit quality

Cited by 13 publications

References 34 publications

Ethylene-Mediated Modulation of Bud Phenology, Cold Hardiness, and Hormone Biosynthesis in Peach (Prunus persica)

Ethylene-Mediated Modulation of Bud Phenology, Cold Hardiness, and Hormone Biosynthesis in Peach (Prunus persica)

NC‐1 coating combined with 1‐MCP treatment maintains better fruit qualities in honey peach during low‐temperature storage

Postharvest Fruit Detachment in Oil Palm Bunches with Ethephon and Ethylene Gas Application

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