Effect of chemical thinning using 6-benzyladenine (BA) on Maciel peach (Prunus persica L.)

Barreto, Caroline Farias; Navroski, Renan; Zandoná, Renan Ricardo; Farias, Roséli de Mello; Malgarim, Marcelo Barbosa; Mello-Farias, Paulo

doi:10.21475/ajcs.18.12.06.pne1086

Cited by 8 publications

(13 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Peach tree cultivars exhibit high bloom, a fact that results in an excessive number of fruits which is incompatible with the production capacity of the plant (Giovanaz et al, 2016;Barreto et al, 2018). The excessive number of fruits leads to small fruits that have low commercial value (Giovanaz et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…However, few have shown satisfactory thinning effects. In order to carry out chemical thinning of peach trees, some products, such as 6-benzyladenine, gibberellins, ethylene and metamitron (Meitei et al, 2013;Giovanaz et al, 2014;Giovanaz et al, 2016;Farias et al, 2017;Barreto et al, 2018), have been investigated. Metamitron may be an efficient alternative to peach tree thinning (McArtney et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Influence of the Period of Peach Tree Chemical Thinning on Fruit Quality

Barreto¹,

Farias²,

Zandoná³

et al. 2019

JAS

Self Cite

View full text Add to dashboard Cite

The need to decrease production costs along with the lack of man power in the countryside has asked for cultural practices which lead to these factors, such as thinning. Thus, chemical thinning has been studied as an alternative to fruit manual thinning. Therefore, this study aimed at evaluating the quality of peach tree fruits after chemical thinning with metamitron at different time periods in the south of Brazil. The experiment was carried out in a commercial peach tree orchard with cultivars ‘Maciel’ in Morro Redondo, Rio Grande do Sul state, Brazil, from 2015 to 2016. Treatments consisted in the application of metamitron (doses of 200 mg L-1) on the 20th, 30th, 40th, 50th and 60th day after full bloom (DAFB) and manual thinning on the 40th DAFB. Epidermis color, pulp firmness, ripeness index, soluble solids, titratable acidity, juice pH, total phenolic compounds and antioxidant activity were evaluated. The application of metamitron in peach tree thinning did not affect peach color. Changes in the other variables related to the quality of fruits depended on the application period of metamitron in the thinning process and between crops.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of the Period of Peach Tree Chemical Thinning on Fruit Quality

Barreto¹,

Farias²,

Zandoná³

et al. 2019

JAS

Self Cite

View full text Add to dashboard Cite

show abstract

“…In addition to the difference in bioactive compounds in the fruits between harvests, the peach cultivar may also be associated. Differences between metamitron doses and harvests have been reported for cultivars BRS Kampai (Farias et al, 2019a), Maciel (Barreto et al, 2018a) and Sensação (Farias et al, 2017).…”

Section: Continuationmentioning

confidence: 93%

“…Regardless of the dose, metamitron reduced antioxidant activity in the peaches in 2016 (Table 4). It is suggested that this reduction may be due to the use of metamitron in association with the dose (Barreto et al, 2018a;Farias et al, 2019a) and/or time of application (Farias et al, 2017). In both harvests, the unthinned trees obtained similar antioxidant activity values when compared with the trees subjected to the hand thinning of fruits.…”

Section: Continuationmentioning

confidence: 99%

“…Some studies have shown the potential of chemical thinning in the peach crop (Taheri, Cline, Jayasankar, & Pauls, 2012;Giovanaz et al, 2016;Barreto et al, 2018a;Farias et al, 2020). In temperate fruit trees, chemical thinning has been performed with products with hormonal action or products which act on the electron transport chain between photosystems, such as metamitron (Petri et al, 2016;Goulart et al, 2017;Gabardo et al, 2017a;Farias et al, 2019aFarias et al, , 2020.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Metamitron in the chemical thinning of ‘PS 10711’ peach trees

Farias

Barreto

Zandoná

et al. 2020

Semina: Ciênc. Agrár.

Self Cite

View full text Add to dashboard Cite

Chemical thinning of fruits may be an alternative practice to hand thinning. Hand thinning must be performed in a short time during the fruiting stage, but lack of manpower and the onerous costs of the operation make it increasingly difficult to employ it at the right time and at the ideal intensity. The objective of this study was to examine the effect of different concentrations of metamitron as a chemical thinner on ‘PS 10711’ peach trees. The experiment was carried out during two harvests in an orchard in the municipality of Eldorado do Sul, in the Central Depression region of the state of Rio Grande do Sul, Brazil. Treatments consisted of the application of metamitron at the concentrations of 100, 200, 300 and 400 mg L-1; hand thinning; and no thinning. The fruits were thinned chemically and by hand 40 days after the peach trees were in full bloom. Fruit abscission, fruit set, number of fruits, production per tree and fruit quality were evaluated. Metamitron has a thinning effect on the peaches of cultivar PS 10711. The metamitron concentrations of 100 and 200 mg L-1 result in less fruit abscission as compared with hand thinning. The thinning effect of metamitron alters production per tree, but does not interfere with fruit quality.

show abstract

Diversity and Functional Dynamics of Fleshy Fruit Abscission Zones

Tranbarger

Tadeo

2020

Annual Plant Reviews Online

View full text Add to dashboard Cite

We examine the current knowledge about the abscission of fleshy fruit, in particular with regards to the development and function of the abscission zone (AZ). While tomato is currently the main model species to elucidate the mechanisms of fleshy fruit abscission, most studies on tomato focus on the development and function of the pedicel AZ, which is involved in both flower and ripe fruit abscission. However, the localization of the AZ within the pedicel is not the most common location of the AZ for fleshy fruit. Fleshy fruit can have one or more AZ, which can be found in different locations within the inflorescence and fruiting structure and fulfil different functions. In fact, most of the fleshy fruit species examined thus far have more than one AZ, which can be found at the boundary between the fruit and pedicel (often referred to as the calyx AZ), within the pedicel as with tomato, at the juncture of the pedicel and peduncle or at the juncture between peduncle and shoot/branch. In addition, the different AZs may be activated or function at different stages of development, under different environmental conditions, or have a completely different purpose, such as the abscission of fruitlets or mature fruit. Together, our current knowledge about AZs suggests that while there are similarities between different AZs in different locations or from different species, not all AZs are created equal, which may be reflected in the underlying molecular mechanisms that control their development and function.

show abstract

Effect of chemical thinning using 6-benzyladenine (BA) on Maciel peach (Prunus persica L.)

Cited by 8 publications

References 13 publications

Influence of the Period of Peach Tree Chemical Thinning on Fruit Quality

Influence of the Period of Peach Tree Chemical Thinning on Fruit Quality

Metamitron in the chemical thinning of ‘PS 10711’ peach trees

Diversity and Functional Dynamics of Fleshy Fruit Abscission Zones

Contact Info

Product

Resources

About