Prevalence of Melon Wilt Disease and Pathogenicity of Fusarium Species Isolated From Melon in Konya Province

Authors : Nuh BOYRAZ, Kubilay K BAŞTAŞ

Pages : 100-105

View : 19 | Download : 24

Publication Date : 2005-12-25

Article Type : Research Paper

Abstract :Fusarium wilt caused by Fusarium oxysporum Schlect f.sp. melonis insert ignore into journalissuearticles values(Leach &Currence); snyd.&Hans is the most im-portant disease of melon insert ignore into journalissuearticles values(Cucumis melo); in many countries, including Turkey. Konya is the major for melon plant field and production amongst the cities of Central Anatolia. Also Fusarium wilt is the most serious disease of melon plants in Konya Province. This study was carried out during 2000-2002 for determination of prevalence Fusarium wilt disease on melons and path-ogenicity of Fusarium species isolated from melon. For this purpose, field surveys were carried out in 2000 and 2001 and then pathogenicity experiments were conducted in 2002. According to field survey results; prevalence ratios of disease were found 72.05 % and 84.55 %, while ratios of infected plants were determined as 19.22 % and 33.36 % in 2000 and 2001 respectively. The following fungi were the most commonly isolated from root and crown of diseased melon plants: Fusarium spp. insert ignore into journalissuearticles values(67.32 %);, Macrophomina phaseolina insert ignore into journalissuearticles values(18.07 %);, Fusarium spp. and Macrophomina phaseolina are together insert ignore into journalissuearticles values(5.90 %);, Alternaria spp. insert ignore into journalissuearticles values(2.39 %);, Rhizoctonia solani insert ignore into journalissuearticles values(1.52 %);, Pythium spp. and insert ignore into journalissuearticles values(1.2 %);. A total of 249 Fusarium spp. isolates were obtained. Of these isolates 37.8 %, 32.6 %, 16.4 %, 11.4 % and 1.8 % were identified as F. oxysporum, F.equiseti, F. culmorum, F.solani and F. semitectum respectively. In pathogenicity experiments were used total 18 Fusarium spp. isolates insert ignore into journalissuearticles values(10 F. oxysporum, 3 F.solani, 3 F. equiseti and 2 F.culmorum);. In the result of pathogenicity tests, only one F. oxysporum isolate was found more virulent insert ignore into journalissuearticles values(95.83 %); than other Fusarium isolates
Keywords : Fusarium solgunluğu, kavun, patojenite, yaygınlık