Pathogen identification of dry rot in Japanese flowering cherry and control agents screening
This study aimed to provide a scientific reference for the prevention and control of Japanese flowering cherry dry rot through pathogen identification and control agent screening.Diseased tissue was collected from Japanese flowering cherry trees planted in Zhengzhou,Henan Province.After isolation,purification,and pathogen examination,three pathogenic fungi were obtained.Morphological observation and molecular biological identification were conducted.The pathogens responsible for Japanese flowering cherry dry rot were Penicillium brevicompactum,Mucor circinelloides,and Botryosphaeriadothidea,with B.dothidea being the dominant pathogen.Indoor toxicity tests were conducted on the three pathogens using seven different fungicides,and preliminary screening of field control agents was carried out.It was found that 1.6％Octamine Acetate(AS)and 10％Phenacetoconazole(SC)showed strong antifungal activity against all three fungi.The two fungicides had average EC5o values of 2.278 μg/mg and 2.359 μg/mg,respectively.The results contribute to the understanding of the pathogenic structure of cherry dry rot disease and provide a scientific foundation for its integrated control.
Japanese flowering cherrydry rotpathogen identificationchemical control
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万方数据
