Plant growth regulators to enhance fruit color of 'Gala' apples

Abstract: The objective of this work was to investigate the effect of plant growth regulators for enhancing fruit color of 'Gala Standard' apples (Malus domestica). The experiment was carried out in the 2015 and 2016 crop seasons. The treatments consisted of water, as a control; 300 mg L-1 ethephon, as a positive control; 400 mg L-1 prohydrojasmonate; and 400 mg L-1 abscisic acid. Flesh firmness, soluble solids content, fruit weight, and red color were assessed after harvest. Plant growth regulators enhanced red color of fruit and chlorophyll degradation. Prohydrojasmonate and abscisic acid did not reduce flesh firmness, in the 2016 season.

摘要：本研究旨在探究植物生长调节剂（plant growth regulators）对提升‘标准嘎啦’苹果（Malus domestica）果实色泽的作用效果。本试验于2015和2016年作物生长季开展，设置的处理包括：清水对照组、300 mg·L⁻¹乙烯利（ethephon，阳性对照）、400 mg·L⁻¹茉莉酸丙酯（prohydrojasmonate）以及400 mg·L⁻¹脱落酸（abscisic acid）。收获后对果肉硬度、可溶性固形物含量、单果重及果实红色色泽进行了测定。结果显示，植物生长调节剂可提升果实红色色泽并促进叶绿素降解；在2016年生长季中，茉莉酸丙酯与脱落酸未降低果肉硬度。