Effects of Aminoethoxyvinylglycine (AVG) and 1-Methylcyclopropene (1-MCP) on the Pre-Harvest Drop Rate, Fruit Quality, and Stem-End Splitting in ‘Gala’ Apples

Preharvest fruit drop is a significant physiological problem that affects numerous commercially apple varieties, including ‘Gala.’ AVG and 1-MCP are two plant growth regulators commonly used to reduce by reducing ethylene synthesis perception, respectively. To optimize yield market acceptance, complete investigation of impacts on quality ‘Gala’ apples required. In this study, four trials were conducted over the course three years determine effects at harvest after cold storage. Our results indicated applications full-rate (130 mgL−1) weeks before (WBAH) more effective minimizing than half-rate (65 did not differ significantly from double rate (260 mgL−1). Additionally, single application was as in preventing 1-MCP. We also demonstrated decreased skin pigmentation when alone or conjunction with GA4+7 1-MCP, while had no negative effect color. Finally, our data showed compared GA4+7, stem-end splitting Gala apples.