Abstract
Although Verticillium dahliae is one of the limiting factors in pepper (Capsicum annuum L.) has no effective control measures, the most effective method is planting resistant cultivars. This study was carried out under controlled climatic conditions to determine the response of some economically important pepper cultivars grown in Turkey against some isolates of V. dahliae. Bafra F1, Ergenekon F1 hybrid cultivars and Sena, Sera Demre 8, Doru 16 registered domestic pepper cultivars were used in this study. V. dahliae isolates (Bisak 16, Kahramanmaraş, Karpuz-2, Karpuz-4, Kayseri) obtained from different regions and hosts and diagnosed were used as a source of inoculums. The disease severity on inoculated plants in pots were calculated according to severity of the wilting (0-5 scale) and browning of stem cut (0-3 scale). Significant differences were observed between pepper cultivars in terms of susceptibility to V. dahliae isolates. According to the study results, when the leaf symptoms were evaluated, varieties resistant to wilt disease were Ergenekon F1 and Bafra F1, while Sera Demre-8 was determined as a susceptible variety. According to the browning symptoms of stem cut, while the resistant variety was Ergenekon F1, Sena was determined as the sensitive variety.
Highlights
Pepper (Capsicum annuum L.), a member of the Solanaceae family, is widely cultivated and consumed worldwide (Csilléry, 2006)
The virulence of five different V. dahliae isolates obtained and identified from different hosts and regions was first tested in detail against different pepper cultivars in vitro in our country
Doru-16 pepper cultivar displayed no disease symptoms followed by the inoculation with the Karpuz-2 isolate, Sera Demre-8 inoculated with the Kahramanmaraş isolate showed the highest disease severity (53%) (0-5 scale)
Summary
Pepper (Capsicum annuum L.), a member of the Solanaceae family, is widely cultivated and consumed worldwide (Csilléry, 2006). Fungal diseases cause approximately about 14% yield loss in vegetable production in the world (Agarwal and Sinclair, 1997; Agrios, 1997) Fungi such as Phytophthora capsici, Rhizoctonia spp., Fusarium spp., Pythium spp., Alternaria spp., Verticillium dahliae, Pyrenochaeta lycopersici, and Botrytis cinerea cause severe diseases in plants such as root blight, root rot, wilt and collapse, and fruit rot in pepper growing areas (Ecevit et al, 1988; Douira et al, 1995; Chellemi et al, 2000; Troncoso et al, 2005; Nguyen et al, 2010).
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