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¹ Batı Akdeniz Tarımsal Araştırma Enstitüsü, Antalya
² Ege Üniversitesi Ziraat Fakültesi Bahçe Bitkileri Bölümü, İzmir
³ Akdeniz Üniversitesi Ziraat Fakültesi, Biyoteknoloji Bölümü, Antalya Viewed : 2002 - Downloaded : 4626 Fusarium oxysporum f. sp. radicis-lycopersici (FORL) causing crown and root rot brings about significant yield losses in tomato growing areas. In this study, the inheritance of resistance to this disease was investigated. F₁, F₂, and BC₁ from crossing resistant line `Fla. 7781` and susceptible line `560` and parents were inoculated with FORL isolate. 493 F₂ plants, 476 BC₁ plants, 30 F₁ plants, 30 resistant and 30 susceptible plants were used in the test.The results were evaluated according to the χ² (chi-square) test. Chi-square value was 0.298 (P = 0.585) obtained from F₂ segregation population tested for FORL and the hypothesis 3:1/R:S segregation was accepted. Similarly, chi-square value was 1.64 (P = 0.199) obtained from tested BC₁ plants and this result did not showed significant deviation from the hypothesis 1:1. The experiment showed that the gene confering resistance, named FORL was single dominant. Keywords : Tomato, Fusarium oxysporum f.sp.radicis-lycopersici, FORL, Inheritance