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Journal: IRANIAN JOURNAL OF PLANT PATHOLOGY | Year:1391 | Volume:48 | Issue:2 (190) | Start Page:143 | End Page:153

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Title

STUDY OF ESCA DISEASE OF GRAPEVINE IN BOJNOURD

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 Start Page 143 | End Page 153

Abstract

 During growing seasons 2005-2007 samples of GRAPEVINE with ESCA symptoms were collected from different vineyards in Bojnourd (North Khorassan province). Isolation was made from affected wood tissues from branches and trunks on PDA, MEA and OA media. In this study, 64 fungi isolates were recovered and identified as PHAEOACREMONIUM parasiticum, PHAEOMONIELLA chlamydospora, FOMITIPORIA mediterranea, Fusarium sp. and Phoma sp. Pathogenesity tests were carried out for Pm. Parasiticum, P. chlamydospora and F. mediterranea under field and greenhouse conditions. Within 6 months after inoculation of cuttings, symptoms developed as sever defoliating and wilting under greenhouse conditions.F. mediterranea caused white wood decay while Pm. parasiticumand P. chlamydospora produced wood discoloration in inoculated GRAPEVINEs. In the field the pathogens were re-isolated and identified from inoculated GRAPEVINEs after symptoms observed.

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