Physiologic races ofFusarium oxysporum f.sp.melonis in the southeastern anatolia region of turkey and varietal reactions to races of the pathogen |
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| Authors: | Sener Kurt B Baran N Sar? H Yetisir |
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| Institution: | (1) Dept. of Plant Protection, Faculty of Agriculture, Mustafa Kemal University, 31040 Antakya, Hatay, Turkey;(2) Inst. of Plant Protection Research, Ministry of Agriculture and Rural Affairs, Yenisehir, Diyarbakır, Turkey;(3) Dept. of Horticulture, Faculty of Agriculture, Cukurova University, 01100 Adana, Turkey |
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| Abstract: | Thirty-four isolates ofFusarium oxysporum f.sp.melonis (F.o.m.) obtained from 205 fields in melon-producing areas in the southeastern Anatolia Region of Turkey were identified on the basis
of colony morphology and pathogenicity by the root dip method. In this region the mean prevalence of wilt disease was 88.1%
and the mean incidence of disease was 47.5%. Physiologic races 0, 1, 2, and 1,2 of the pathogen were determined by their reactions
on differential melon cultivars ‘Charentais T,’ ‘Isoblon’, ‘Isovac’ and ‘Margot’ in the greenhouse. Race 1,2, representating
58.8% (20/34) of all isolates, was widely distributed. Of the other pathogenic isolates, eight were identified as race 0,
five as race 1, and one as race 2. This is the first report of physiologic races ofF.o.m. in Turkey. Of 44 melon cultivars tested in the greenhouse for resistance toF.o.m. races, 36 were found to be moderately resistant to race 0, 17 were susceptible to race 1,2, 34.1% were highly resistant to
race 1, and 52.2% had moderate resistance to race 2.
http://www.phytoparasitica.org posting July 16, 2002. |
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| Keywords: | Melon Fusarium oxysporum f sp melonis race varietal reactions |
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