03019naa a2200217 a 450000100080000000500110000800800410001910000190006024501200007926000090019952022730020865300210248165300310250265300200253365300190255370000230257270000150259570000220261070000180263277301510265011262672017-06-19       2017    bl uuuu     u00u1 u    #d1 aARGENTA, L. C.  aPostharvest losses of apples by fungal decay and physiological disorders in southern Brazil.h[electronic resource]  c2017  aPostharvest losses of apples by fungal rotting and physiological disorders were quantified for fruit treated and untreated with 1-MCP, over four years in three experiments. The frequency of causal pathogens on rotted apples was determined. Apples from 15 orchards of ?Gala?  (Experiment 1) and 17 orchards of ?Fuji? (Experiment 3) cultivars were picked in harvest window for long-term storage and sampled at three commercial packing houses, in each year, within 48 h after harvest, for analyses of production losses during and after storage. Losses in twenty samples of ~380 kg of apples (20 bins) per orchard and year were analyzed during storage; ten samples (10 bins) were treated with 1-MCP and ten remain as untreated. Fruit samples of each orchard and year were stored in an individual Controlled Atmosphere storage room, at ~0.7oC, for 150 to 240 days and 170 to 270 days for ?Gala? and ?Fuji? cultivars, respectively. One sub-sample of 100 healthy apples taken from each sample on the opening day of storage room was kept at 22°C for seven days and then analyzed to quantify losses after storage. For experiment 3, rotted apples from ten storage rooms of each cultivar (?Gala? and ?Fuji?) and year (4) were sampled at pre-sizing sorting line, after storage. Ten samples of 100 rotted apples were taken throughout the sorting period for each storage room and the causal pathogenic fungi identified for each fruit by main symptoms. Total losses of apple fruit during storage varied from 4.2% to 12.1% for Gala and 6.6 to 8.3% for Fuji. Deterioration by rotting was approximately 60% and 80% of total losses of Gala and Fuji cultivars during storage, respectively. Additional losses of fruit after storage by rotting varied from 8% to 19% for Gala and 10.7% to 27.3% for Fuji depending on the year. Senescent breakdown and superficial scald were the second most important causes of losses during and after storage. 1-MCP treatment did not affect losses of ?Gala? and ?Fuji? cultivars by fungal rotting during and after storage. Cryptosporiopsis perennans, Penicillium sp., Botrytis cinerea and Alternaria alternata were the main pathogens for 53%, 23%, 10% and 14% of rotted Gala, respectively and for 48%, 13%, 12% and 8% of rotted Fuji cultivars, respectively.  aBotrytis cinerea  aCryptosporiopsis perennans  aMalus domestica  aPenicillium sp1 aPINTO, F. A. M. F.1 aARAUJO, L.1 aGONÇALVES, M. W.1 aVIEIRA, M. J.  tIn: INTERNATIONAL SYMPOSIUM ON POSTHARVEST PATHOLOGY , 4., 2017, Skukuza, África do Sul. Abstracts... Leuven: Chronica Horticulturae, 2017. p. 24