Mancozeb 및 Oxine-Copper에 대한 사과 겹무늬썩음병균(Botryosphaeria dothidea)의 저항성 = Resistance of Botryosphaeria dothidea to Mancozeb or Oxine-Copper

다국어 초록 (Multilingual Abstract)

For basic information to control apple rot caused byBotryosphaeria dothidea, this test was executed to know whether resistance of this pathogen occurred to fungicides, mancozeb and oxine-copper which have been used for many years, and know if occurred what fungicides can substitute for control of the resistant pathogen. Sensitive isolates were unable to grow at 500ug/ml whereas resistant isolates grew to 18~28mm and 7~9mm in colony diameter at 3,000ug/ml of mancozeb and oxine-copper, respectively. The sensitive isolates showed almost no pycnidia formation at 100ug/ml of either chemical while the resistant isolates formed relatively abundant pycnidia at the recommended concentration of 1,500ug/ml and above. Nuarimol+ mancozeb, propineb and thiabendazole suppressing mycerial growth and pycnidia formation completely at 1/3 of the recommended concentration can be substituted for the control of the resistant pathogen, while chlorothalonil + oxine-copper, dithianon, folpet, nuarimol +mancozeb, and propineb showing 100% suppression of germination are also promissing for the substitution.