Uman NUH | today: 05/21/2019

Storage ability of Golden Delicious apples treated with ethylene inhibitor after picking, depending on harvest date and type of orchard

Author(s) Melnyk O.V., , , Uman National University of Horticulture
Drozd O.O., Candidate of Agricultural Sciences, ,
Melnyk I.O., Researcher, ,
Category The Agronomy
year 2017 issue Випуск №90. Частина 1
pages 55-63 index UDK 664.8.037.1:634.11:631.811.98:577.17
DOI
Abstract The duration of storage of Golden Delicious apples restrict weight loss, functional disorders and fungal diseases. Post-harvest handling with 1-MCP supports fruit sustainability of this variety, prevents the development of functional disorders and fruit rot. Specific requirements of products from varying intensity orchards need to improve post-harvest handling and storage of the crop. Golden Delicious apple fruits were selected in Vinnytsia region from an intensive orchard on dwarf (M.9) and a traditional orchard on middle-vigorous (MM.106) rootstocks in two terms – at the beginning of harvest maturity (mass picking) and a week later (late harvesting). Fruits were cooled at temperature of 5 ± 1 °C, and the next day half of the products were treated with 1-MCP on the recommendation of the producer of the drug Smart Fresh. After 24-hour exposure, control and processed fruits were placed in a storage chamber at of 2 ± 1 °C and relative humidity of 85–90 %. It was found out that reasonable storage time of Golden Delicious apples from an intensive orchard at 2 ± 1 °C with 90 % level of marketable products does not exceed six months and no more than five months – for the late harvested fruits from a traditional orchard. The best-performance after six or seven months of storage is shown by the products from an intensive orchard. Postharvest treatment with 1-MCP provides high marketable output (91.2–94.5 %) within seven months of storage with a positive effect for the fruits from a traditional apple orchard. A higher level of natural losses was found for the fruits from a traditional orchard. Postharvest treatment with 1-MCP reduces natural losses by 1.1–1.4 times during the seven-month storage. Late harvesting apples from both types of the orchards were more significantly affected with fruit rot. The post-harvest treatment with 1-MCP reduced the degree of losses from fruit rot to the level of 0.9–3.8 %.
Key words Golden Delicious, 1-Methylcyclopropene, 1-MCP, Smart Fresh, rootstock, harvest date, storage, product quality.
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