Abstract Growth regulators are widely used by apple growers, however there is few information about the effect on fruit stored under new dynamic controlled atmosphere. The aim of this study was to evaluate the effects of naphthalene acetic acid (NAA) and aminoethoxyvinylglycine (AVG), isolated and combined, on the quality and volatile organic compounds profile of ‘Royal Gala’ apples at harvest and after 9 months of storage under controlled atmosphere (CA), dynamic controlled atmosphere with chlorophyll fluorescence (DCA-CF) and dynamic controlled atmosphere with respiratory quotient 1.3 (DCA-RQ1.3) conditions. Pre-harvest treatments were: [1] Control: water only; [2] NAA (0.04 kg ha−1 of NAA - Fruitone™) applied 7 d before harvest (BH); [3] AVG (0.83 kg ha−1of Retain at 15 % a.i.) 30 d BH; [4] AVG + NAA (30 + 7 d BH, respectively). Each pre-harvest treatment was stored under the following conditions: [1] CA (1.2 kPa O2 + 2.0 kPa CO2); [2] DCA-CF with 1.2 kPa CO2; [3] DCA-RQ1.3 + 1.2 kPa CO2. AVG + NAA application in pre-harvest caused an increase in some important volatile organic compounds such as 2-methylbutyl acetate, hexyl acetate and butyl acetate in ‘Royal Gala’ apples after long-term storage under CA, when compared to DCA-CF and DCA-RQ1.3 storage. These growth regulators showed fruit with higher titratable acidity. DCA-RQ1.3 had reduced mealiness incidence in fruit with NAA application, in spite of did not differ from DCA-CF. ‘Royal Gala’ apples with AVG + NAA application and stored under DCA-CF or DCA-RQ1.3 had higher flesh firmness, reduce physiological disorders and higher percentage of healthy fruit. However, NAA and AVG did not increase the concentration of volatile compounds in ‘Royal Gala’ apples stored under DCA-CF and DCA-RQ1.3. AVG and NAA applied isolated maintain higher total esters after CA storage. DCA-CF and DCA-RQ1.3 reduces the negative impact of NAA application on quality maintenance of ‘Royal Gala’ apples.

中文翻译：

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'Royal Gala'苹果收获和动态气调贮藏后品质性状和挥发性有机物分布的生长调节剂

摘要 生长调节剂被苹果种植者广泛使用，但在新的动态可控气氛下对果实贮藏影响的信息很少。本研究的目的是评估分离和组合的萘乙酸 (NAA) 和氨基乙氧基乙烯基甘氨酸 (AVG) 对收获时和在低温下储存 9 个月后的 'Royal Gala' 苹果的质量和挥发性有机化合物特征的影响。受控大气 (CA)、具有叶绿素荧光的动态受控大气 (DCA-CF) 和具有呼吸商 1.3 (DCA-RQ1.3) 条件的动态受控大气。收获前处理是： [1] 对照：仅水；[2] 在收获 (BH) 前 7 天施用 NAA（0.04 kg ha-1 NAA - Fruitone™）；[3] 平均（0.83 kg ha−1of Retain at 15 % ai）30 d BH；[4] AVG + NAA（分别为 30 + 7 d BH）。每个收获前处理都在以下条件下储存： [1] CA（1.2 kPa O2 + 2.0 kPa CO2）；[2] DCA-CF 与 1.2 kPa CO2；[3] DCA-RQ1.3 + 1.2 kPa CO2。与 DCA-CF 和 DCA-CF 相比，在收获前施用 AVG + NAA 导致“皇家嘎拉”苹果在 CA 下长期储存后一些重要的挥发性有机化合物（例如乙酸 2-甲基丁酯、乙酸己酯和乙酸丁酯）增加。 DCA-RQ1.3 存储。这些生长调节剂显示出具有更高可滴定酸度的果实。尽管与 DCA-CF 没有区别，但 DCA-RQ1.3 使用 NAA 降低了水果中的粉状发生率。使用 AVG + NAA 并在 DCA-CF 或 DCA-RQ1.3 下储存的“Royal Gala”苹果具有更高的果肉硬度、减少生理障碍和更高的健康水果百分比。然而，NAA 和 AVG 不会增加在 DCA-CF 和 DCA-RQ1.3 下储存的“皇家盛典”苹果中挥发性化合物的浓度。在 CA 储存后，单独应用的 AVG 和 NAA 保持较高的总酯。DCA-CF 和 DCA-RQ1.3 降低了 NAA 应用对“皇家盛典”苹果质量保持的负面影响。