Race Distribution, Vegetative Compatibility and Pathogenicity of Fusarium oxysporum f. sp. melonis Isolates in Greece |
| |
Authors: | K Elena and A C Pappas |
| |
Institution: | Authors' addresses: Benaki Phytopathological Institute, 14561 Kifissia, Athens, Greece;;University of Thessaly, Department of Agriculture Crop Production and Rural Environment, Laboratory of Plant Pathology, Fitokou St., 384 46 N. Ionia, Volos, Greece (correspondence to K. Elena. E-mail: ) |
| |
Abstract: | Races and vegetative compatibility groups (VCGs) in Greek isolates of Fusarium oxysporum f. sp. melonis(Fom) were characterized. Three races (0, 2 and 1–2) among 12 isolates tested and two VCGs among 19 isolates tested, were identified. Race 1–2 was the most common and race 1 was not detected. One widespread VCG corresponded to a VCG previously reported from Israel (coded 0138), and included seven isolates of races 0 and 1–2. The other VCG, which was unclassified, included four isolates of races 0, 2 and 1–2. The latter VCG was detected only in a specific melon‐growing location of Evros. The remaining eight isolates tested for VCG did not show positive reactions with other isolates, with each other or with the testers of VCGs 0135 or 0138, although they produced complementary mutants. Using two inoculation methods, the local cv. ‘Golden Head’ was found susceptible to all known Fom races, and especially to race 1–2. These results show the presence of more than one VCG and the widespread distribution of the race 1–2, in Greece. |
| |
Keywords: | Fusarium wilt heterokaryon melon races vegetative compatibility groups |
|
|