Sensitivity of Monilinia laxa (Ader. & Ruhl.) to Fungicides Having Different Modes of Action
Osetljivost Monilinia laxa (Ader. & Ruhl.) na fungicide različitog mehanizma delovanja
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Author
Stevic, Milan
Vuksa, Petar
Keywords
M. laxaSensitivity
Resistance
Fungicides
osetljivost
rezistentnost
fungicidi
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Show full item recordAbstract
Sensitivity of five M. laxa isolates from mumified plum fruits was tested to benomyl,
iprodione, trifloxystrobin, tebuconazole and pyrimethanil. Mycellia growth inhibition on
growth medium was monitored and susceptibility parameters were determined using probit
analysis. The EC50 values for benomyl were the highest, ranging from 123.1 to 901.5 μg/kg, followed by iprodione (125.9-301.4 μg/kg), trifloxystrobin (4.2-9.2 μg/kg), tebuconazole
(14.2-41.8 μg/kg) and pyrimethanil (148.0-190.8 μg/kg). Natural M.laxa populations medium
resistant to benomyl were established. The isolates tested showed a normal sensitivity to
iprodione, trifloxystrobin, tebuconazole and pyrimethanil. Ispitivana je osetljivost pet izolata M. laxa izolovanih sa mumificiranih plodova šljive
na benomil, iprodion, trifloksistrobin, tebukonazol
i pirimetanil. Praćena je inhibicija porasta micelije
na hranljivoj podlozi i utvrđeni su parametri osetljivosti metodom probit analize. Najveći raspon
srednjih efektivnih koncentracija bio je kod benomila (123,1-901,5 μg/kg). EC50 vrednosti
za ostale fungicide bile su u intervalu: iprodion
(125,9-301,4 μg/kg)), trifloksistrobin (4,2-9,2 μg/kg)), tebukonazol (14,2-41,8 μg/kg)) i pirimetanil (148,0-190,8 μg/kg). Utvrđeno je
postojanje umereno rezistentnih prirodnih
populacija M. laxa na benomil. Svi ispitivani
izolati ispoljili su normalnu osetljivost na iprodion,
trifloksistrobin, tebukonazol i pirimetanil.