AVG and GA3 prevent preharvest fruit drop and enhance postharvest quality of 'BRS 189' cashew

Souza, Kellina Oliveira de; Silveira, Amanda Germano; Lopes, Mônica M.A.; Moura, Carlos Farley Herbster; Silva, Ebenézer O.; Ayala-Zavala, J. Fernando; Soares, Lucilene Silva Pereira; Miranda, Maria Raquel Alcântara de

doi:10.1016/j.scienta.2019.108771

Cited by 10 publications

(6 citation statements)

References 48 publications

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“…In an investigation by Hang and Chau (2020), a marked increase in rambutan yield was observed when GA3 alone or a combination of GA3 and NAA was applied at early growth stages, in the fourth, sixth, and eighth week after fruit set. The present research findings of enhanced fruit yield with double GA3 application are also in line with the observations made by Li et al (2011) in pineapple, Souza et al (2019) in cashew, Zang et al (2016) in blueberry, Kumar et al (2009) in litchi and Erogul and Sen (2015) in Japanese plum. The use of GA3 had a significant and positive effect on the percentage of edible content of rambutan fruits (Fig.…”

Section: Fruit Yield and Shelf Lifesupporting

confidence: 91%

Gibberellic Acid Spray Modulates Fruiting, Yield, Quality, and Shelf Life of Rambutan (Nephelium lappaceum L.)

Mesbah Uddin,

Gomasta,

Torikul Islam

et al. 2024

Journal of Horticultural Research

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A lucrative and delicious nonclimacteric tropical fruit, rambutan, has disadvantages of inadequate fruiting, low yield, and inferior edibility at farm level that need to be addressed. Moreover, unstable tropical temperatures and humidity threaten poor fruit set and insufficient rambutan yields. Therefore, the study revealed the effectiveness of gibberellic acid (GA3) on fruit set and retention, fruit size and yield, shelf life, and postharvest properties of rambutan under these atmospheric conditions. GA3 at concentrations of 50, 100, 200, 300, 400, and 500 ppm, apart from the control (without GA3), was applied to panicles twice in the early flowering and the early fruiting stages (thirty days after the first spraying). The results showed that maximum fruit set (223.2 per panicle), retention (13.2 per panicle, 5.9%), and yield (714.0 g per panicle) were obtained by GA3 treatment at 300 ppm. In addition to increasing fruit size (54.1 g) and pulp weight (31.3 g), GA3 at a dose of 300 ppm significantly reduced seed weight by 27.5% and increased the edible portion by 26.6% compared to the control. Notably, preharvest GA3 treatment increased TSS content (19.0%), total sugar (4.5%), and shelf life (11.5 days), while it decreased titratable acidity (0.4%) of rambutan. GA3 doses from 200 to 500 ppm had similar effects in terms of affecting the edible properties and shelf life of rambutan. However, fruit set, retention, and yield exhibited distinct dose-dependent responses, with 300 ppm being the best and 200 ppm consistent with the best, with some differences. Regression analysis showed a skewed curve explaining higher yield and better fruit quality at the medium GA3 treatment level (250–350 ppm). In comparison, lower (< 200 ppm) and higher (> 400 ppm) doses resulted in worse results in most cases. Therefore, regulated use of GA3 is necessary to improve rambutan yield and fruit quality.

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Section: Fruit Yield and Shelf Lifesupporting

confidence: 91%

Gibberellic Acid Spray Modulates Fruiting, Yield, Quality, and Shelf Life of Rambutan (Nephelium lappaceum L.)

Mesbah Uddin,

Gomasta,

Torikul Islam

et al. 2024

Journal of Horticultural Research

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“…These enzymes are like cellulase and polygalacturonase, which dissolve the cell wall, accelerate fruit maturity, and eventually induce fruit abscission [ 59 ]. Previous findings revealed that PFD is diminished with delayed fruit ripening using AVG that reduced ethylene biosynthesis via the inhibition of ACC synthase activity [ 22 , 60 , 61 ]. It was reported that spraying apple trees with AVG four weeks before harvest delayed the fruit ripening rate and decreased PFD by 50% [ 12 ].…”

Section: Resultsmentioning

confidence: 99%

“…Preharvest fruit drop (PFD) was determined daily by counting the number of dropped fruit under each tree for six consecutive days before harvest, and then PFD was calculated as a percentage in relation to the total number of harvested fruit [ 60 ]. Fruit were harvested at the yellowish-green stage by the end of the first week of June during both seasons (~70–80 days from full bloom) [ 88 ].…”

Section: Methodsmentioning

confidence: 99%

Yield, Fruit Quality, and Storability of ‘Canino’ Apricot in Response to Aminoethoxyvinylglycine, Salicylic Acid, and Chitosan

Elmenofy

Okba

Salama

et al. 2021

Plants

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Ethylene plays a pivotal role in the climacteric fruit ripening and senescence process. The effect of three ethylene inhibitors on the yield, quality, and storability of ‘Canino’ apricot fruit was studied. Foliar sprays of distilled water (control), aminoethoxyvinylglycine (AVG) (150 and 100 mg·L−1), salicylic acid (SA) (4 and 2 mM), and chitosan (2.5% and 1.5%) were applied 30 and 15 days before harvest. Results indicated that the high concentrations of AVG and SA recorded the lowest percentage of preharvest fruit drop and, hence, the highest yield. Trees receiving either concentration of AVG showed the highest fruit firmness. High concentrations of all three ethylene inhibitors reduced fruit weight loss, total carotenoids, and soluble solid content (SSC), but increased total acidity (TA) during cold storage (2 °C). A high score of overall taste acceptability was observed with a higher concentration of SA, which was also recorded the lowest fruit malondialdehyde content (MDA) at harvest and during storage. The highest concentrations of SA and chitosan recorded no decay for 28 days of storage. Gene expression analysis reflected higher expression of PaACS1 gene with the highest concentrations of ethylene inhibitors, suggesting that SA (4 mM) is recommended for optimal yield, quality, and storability of ‘Canino’ apricot fruit grown under Egyptian conditions.

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“…Research has shown that auxin is involved in the formation of the abscission layer and plays a role in delaying plant organ abscission [19]. 2,4-D is a growth regulator that belongs to the auxin class and has been used in citrus and other fruit trees to retain fruit and delay fruit abscission [20][21][22]. One of the ways in which GA inhibits fruit ripening and senescence is by suppressing the accumulation of 1-aminocyclopropane-1-carboxylic acid (ACC), a precursor of ethylene biosynthesis, thereby inhibiting ethylene production [23].…”

Section: Discussionmentioning

confidence: 99%

Response of Abscission Zone of Blue Honeysuckle (Lonicera caerulea L.) Fruit to GA3 and 2,4-D Spray Application

Ren,

Zhang,

Chen

et al. 2023

Agronomy

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The nutritional value of blue honeysuckle (Lonicera caerulea L.) fruit is abundant; however, its production faces challenges due to a short harvesting period and fruit drop issues. In this study, the effects and potential mechanisms of two different plant growth regulators, GA3 (Gibberellins acid) and 2,4-D (2,4-Dichlorophenoxyacetic acid), on blue honeysuckle fruit abscission and abscission layer formation were investigated. The main cultivated variety of blue honeysuckle, ‘Berel’, was used as the experimental material. GA3 and 2,4-D were sprayed on the plants from the veraison. The anatomical structure of the fruit abscission zone (FAZ) was observed after treatment. Key enzymes involved in cell wall degradation, pectinase, cellulase, polygalacturonase, and pectin methylesterase, were analyzed for their activities. Furthermore, the gene expression levels of cell wall detachment-related genes CX1, CX2, PL20, PE, and key genes for gibberellin and ethylene synthesis GA2OX1, GA1, ACO, and ACO3 were examined. The results indicated that the application of GA3 and 2,4-D could delay the formation of the abscission layer. In the FAZ treated with GA3 and 2,4-D at 5 DAT, the activity of key enzymes involved in cell wall degradation decreased, the expression of genes related to cell wall degradation enzymes and key genes for ethylene synthesis was inhibited, and the drop of fruit reduced. In conclusion, exogenous application of GA3 and 2,4-D suppresses the abscission of ‘Berel’ blue honeysuckle fruit, likely through the inhibition of cell wall degradation and abscission layer formation.

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AVG and GA3 prevent preharvest fruit drop and enhance postharvest quality of 'BRS 189' cashew

Cited by 10 publications

References 48 publications

Gibberellic Acid Spray Modulates Fruiting, Yield, Quality, and Shelf Life of Rambutan (Nephelium lappaceum L.)

Gibberellic Acid Spray Modulates Fruiting, Yield, Quality, and Shelf Life of Rambutan (Nephelium lappaceum L.)

Yield, Fruit Quality, and Storability of ‘Canino’ Apricot in Response to Aminoethoxyvinylglycine, Salicylic Acid, and Chitosan

Response of Abscission Zone of Blue Honeysuckle (Lonicera caerulea L.) Fruit to GA3 and 2,4-D Spray Application

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