“…According to Brackmann et al (2004), the rapid loss of quality of 'Gala' apples stored under refrigeration is linked to the high ethylene production rates, in addition to the high respiratory rate of this cultivar. The higher the ethylene production and action, the higher the ripening speed and fruit senescence (BRACKMANN et al, 2009b).…”
The aim of this work was to evaluate the effect of single and multiple pre-harvest spray aminoethoxyvinylglycine (AVG) applications with or without ethephon, in ‘Baigent’ apple trees cultivated under anti-hail screen and harvesting date on fruit quality after storage. The experiment was conducted in a commercial orchard in the municipality of Vacaria/RS, in the 2014/15 and 2015/16 harvests. Treatments consisted of: control (plants sprayed with water); AVG (125 mg L-1, 30 days before the predicted harvest date; BPHD); ethephon (120 mg L-1, seven BPHD); AVG (62.5 mg L-1 + 62.5 mg L-1, 30 and 20 BPHD); AVG (62.5 mg L-1 + 62.5 mg L-1, 30 and 20 BPHD) + ethephon (120 mg L-1, seven BPHD). Fruits of all treatments were harvested at commercial harvest (harvest 1) and after 14 days (harvest 2). Fruits were evaluated after four months of cold storage (0.5 °C ± 0.2 °C and RH 92 ± 5%). The use of AVG, regardless of single or multiple applications, reduced ethylene production rate, skin yellowing, farinaceous pulp and senescent degeneration incidence and maintained higher pulp firmness values and pulp penetration and skin rupture strength. Ethephon provided fruits with higher farinaceous pulp incidence. Fruit treated with AVG, regardless of single or multiple application and combination with ethephon, presents better quality after cold storage.
“…According to Brackmann et al (2004), the rapid loss of quality of 'Gala' apples stored under refrigeration is linked to the high ethylene production rates, in addition to the high respiratory rate of this cultivar. The higher the ethylene production and action, the higher the ripening speed and fruit senescence (BRACKMANN et al, 2009b).…”
The aim of this work was to evaluate the effect of single and multiple pre-harvest spray aminoethoxyvinylglycine (AVG) applications with or without ethephon, in ‘Baigent’ apple trees cultivated under anti-hail screen and harvesting date on fruit quality after storage. The experiment was conducted in a commercial orchard in the municipality of Vacaria/RS, in the 2014/15 and 2015/16 harvests. Treatments consisted of: control (plants sprayed with water); AVG (125 mg L-1, 30 days before the predicted harvest date; BPHD); ethephon (120 mg L-1, seven BPHD); AVG (62.5 mg L-1 + 62.5 mg L-1, 30 and 20 BPHD); AVG (62.5 mg L-1 + 62.5 mg L-1, 30 and 20 BPHD) + ethephon (120 mg L-1, seven BPHD). Fruits of all treatments were harvested at commercial harvest (harvest 1) and after 14 days (harvest 2). Fruits were evaluated after four months of cold storage (0.5 °C ± 0.2 °C and RH 92 ± 5%). The use of AVG, regardless of single or multiple applications, reduced ethylene production rate, skin yellowing, farinaceous pulp and senescent degeneration incidence and maintained higher pulp firmness values and pulp penetration and skin rupture strength. Ethephon provided fruits with higher farinaceous pulp incidence. Fruit treated with AVG, regardless of single or multiple application and combination with ethephon, presents better quality after cold storage.
“…Each treatment was composed of four replicates of 25 fruit and the design was completely randomized. For 'Royal Gala' apples, 4 treatments were carried out in a factorial scheme (2 × 2), with two atmosphere conditions: [1] 1.2 kPa O 2 + 2.0 kPa CO 2 ; [2] 0.8 kPa O 2 + 1.6 kPa CO 2 ; and two temperatures (1.0 and 1.5 °C) (Both et al 2017;Brackmann et al 2009). For 'Galaxy' apples, a bifactorial scheme (3 × 2) was used, with three atmosphere conditions [1] 1.2 kPa O 2 + 2.0 kPa CO 2 ; [2] 0.8 kPa O 2 + 1.6 kPa CO 2; [3] 0.4 kPa O 2 + 1.2 kPa CO 2, and two temperatures (1.0 and 1.5 °C).…”
Section: Experimental Material Establishment and Monitoring Of Ca Conditionsmentioning
confidence: 99%
“…Most apples produced in Brazil belong to the 'Gala' cultivar and its spontaneous mutants, including 'Galaxy' and 'Royal Gala' , totalizing a production of 326,658 t in 2017/2018 crop, representing 66% of the national apple production (Agapomi 2018). These mutants stand out for presenting a good red coloration of epidermis (Brackmann et al 2009(Brackmann et al , 2012Weber et al 2013), high juiciness and better balance between acidity and soluble solids (Thewes et al 2015).…”
Section: Introductionmentioning
confidence: 99%
“…The reduction in temperature suppresses the respiratory pathway, ethylene production and, consequently, the reduction of biochemical changes in the fruit (Kruse et al 2011;Saltveit 1999;Steffens et al 2007). The ideal temperature for controlled atmosphere storage of 'Gala' apples and their mutants ranges from 0.0 to 1.0 °C (Both et al 2017;Brackmann et al 2009;Thewes et al 2017a). However, recent studies reported the possibility of increasing the storage temperature of some types of apples without quality losses (Anese et al 2019;Weber et al 2019).…”
Para manutenção da qualidade e aumento no tempo de armazenamento de frutas climatéricas como a pera, uma das estratégias é a utilização do 1-metilciclopropeno (1-MCP), que reduz os efeitos do etileno, o qual é responsável pelo amadurecimento dos frutos. Objetivou-se a avaliação da influência do 1-MCP na qualidade pós-colheita de peras 'Abate Fetel', 'Packham's' e 'Tenra' armazenadas em câmara fria. As frutas foram tratadas com 1-MCP no interior de caixas plásticas vedadas, à temperatura de 20 ºC, por 14 horas, sendo em seguida transferidas para câmara fria (0 °C ± 1 °C e 85% ± 5% UR), onde permaneceram por períodos de 30, 60, 90 e 120 dias. As variáveis analisadas foram firmeza de polpa, índice DA, pH do suco, acidez titulável e sólidos solúveis. Observou-se que o 1-MCP é eficiente na manutenção da firmeza de polpa dos frutos das cultivares estudas, armazenadas em câmara fria. Além disso, a degradação de clorofila de peras 'Abate Fetel' e 'Packham's', armazenadas em câmara fria, foi reduzida com a utilização do 1-MCP.
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