Abstract
Root-knot nematodes (Meloidogyne spp.; RKN) are one of the most important pathogens of vegetables in Turkey. Assessing the existing virulent RKN populations is of importance for pathogen mapping in the west Mediterranean region of Turkey. Therefore, 95 populations of RKN were collected from different protected vegetable-growing locations in the region. Pure cultures were obtained and identified by means of species-specific primers. Virulence of the populations against the Mi-1 gene conferring resistance to Meloidogyne incognita, M. javanica and M. arenaria was determined according to their egg masses and gall rating on resistant and susceptible tomato varieties. Results showed that seven populations of M. incognita and six populations of M. javanica were able to overcome the resistance controlled by the Mi-1 gene. The frequency of virulent populations of M. incognita and M. javanica collected from different protected-grown vegetables was 11.7% and 21.4%, respectively. To our knowledge, this is the first report of populations of RKN virulent to the Mi-1 gene in Turkey.
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Acknowledgments
Seeds of the resistant and susceptible tomato varieties were kindly provided by Yüksel Seeds Ltd. (Antalya, Turkey) and Multi Tarım Ltd. (Antalya, Turkey), respectively. This study was supported financially by The Scientific and Technological Research Council of Turkey as project no. TOVAG-107 O 016. The authors wish to thank Mehmet Ülger (General Director, Multi Tarım, Antalya, Turkey) for allowing the studies to be carried out in the Multi Tarım Co. facilities; and Ömür Baysal (BATEM, Antalya, Turkey) and Nedim Mutlu (Akdeniz University, Seed and Agricultural Biotechnology Center, Antalya, Turkey) for reading the manuscript.
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Devran, Z., Söğüt, M.A. Occurrence of virulent root-knot nematode populations on tomatoes bearing the Mi gene in protected vegetable-growing areas of Turkey. Phytoparasitica 38, 245–251 (2010). https://doi.org/10.1007/s12600-010-0103-y
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DOI: https://doi.org/10.1007/s12600-010-0103-y