This study was carried out for the isolation and identification of common postharvest fungal disease agents on banana fruits sampled from packaging houses in districts of Mersin province such as Bozyazı, Anamur and Erdemli, during 2013-2014 growing season. Methods and Results: During disease survey in 2013 and 2014 bananagrowing seasons, diseased/suspected banana fruit samples were taken from warehouses and packing houses in different districts of Mersin province. Postharvest fungal disease agents were isolated from the banana fruits and identified according to their morphological structures. Following isolation, a total of 238 fungal isolates were obtained from 197 different diseased fruits. Isolates belonging to Fusarium spp. (21.8%) were the most prevalent fungal isolate determined on fruits showing crown rot disease symptoms followed by Fusarium verticillioides (13.4%), F. oxysporum (10.5%), F. proliferatum (9.7%) and Thielaviopsis paradoxa (2.5%), respectively. Isolates belong to Fusarium spp. (7.6%), Musicillium theobromae (2.9%) and Deightoniella torulosa (1.7%) were isolated and determined as causal disease agents responsible for fruit end rot disease symptoms. F. verticillioides (4.2%) was determined as the causal disease agent of internal rot symptoms of the fruits. Alternaria alternate (10.9%), Penicillium spp. (8.8%), Aspergillus niger (4.6%) and Cladosporium cladosporioides (1.3%) isolates were identified as secondary (opportunistic) disease agents on banana fruit showing different rotting symptoms. Conclusions: In Turkey, there has not been any research on the fungal agent(s) that cause a significant postharvest loss in banana fruits up to now. With this study, fungal disease agents that occur after harvesting and cause quality and quantity losses in banana fruits grown in Mersin province were determined. Results of this study fulfilled partially deficiency in this area. Significance and Impact of the Study:The results obtained in this study are of the nature to shed light on future studies on post-harvest diseases and their control, which should be studied primarily in banana fruits.
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