The study was carried out to determine the effect of different aminoethoxyvinylglycine (AVG) application doses on pre-harvest fruit drop in semi-dwarf rootstock grafted to ‘Red Delicious, Red Chief’ apple in Central Anatolia Region, Turkey. Different concentrations of AVG (0, 250, 500, 750 mg/l) were applied to apple trees 4 weeks before the anticipated harvest to assess the effects of AVG on fruit drop and fruit quality. Cumulative drop percentage (%), fruit removal force (N), fruit weight (g), flesh firmness (N), soluble solids concentration (SSC, %), pH, titratable acidity (TA, g malic acid 100 g⁻¹) and fruit color (L*, C*, h°) were determined. All AVG doses significantly reduced the cumulative drop percentage compared to the control treatment. The fruit removal force and fruit flesh firmness increased, and SSC decreased compared to control with the increasing AVG doses. The amount of TA increased with the increasing AVG doses while pH decreased. The fruit weight did not change, and the red color formation was delayed by the increasing of AVG doses.

本研究旨在确定不同氨基乙氧基乙烯基甘氨酸 (AVG) 施用剂量对土耳其安纳托利亚中部地区嫁接至“Red Delicious, Red Chief”苹果的半矮砧砧木收获前落果的影响。在预期收获前 4 周将不同浓度的 AVG（0、250、500、750 mg/l）施用于苹果树，以评估 AVG 对落果和果实品质的影响。累积落果率(%)、去果力(N)、果重(g)、果肉硬度(N)、可溶性固形物浓度(SSC, %)、pH、可滴定酸度(TA, g 苹果酸 100 g ^-1) 和果实颜色 (L*, C*, h°) 进行了测定。与对照治疗相比，所有 AVG 剂量显着降低了累积下降百分比。与对照相比，随着AVG剂量的增加，果实去除力和果肉硬度增加，SSC降低。TA 的量随着 AVG 剂量的增加而增加，而 pH 值降低。果实重量没有变化，红色的形成随着 AVG 剂量的增加而延迟。