Inheritance of Resistance to Races 0 and 2 of Fusarium oxysporum f. sp. melonis in a Gynoecious Muskmelon. F. W. Zink, Department of Vegetable Crops, University of California, Davis 95616. W. D. Gubler, Department of Plant Pathology, University of California, Davis 95616. Plant Dis. 70:676-678. Accepted for publication 3 January 1986. Copyright 1986 The American Phytopathological Society. DOI: 10.1094/PD-70-676.

The mode of inheritance of resistance to Fusarium wilt (Fusarium oxysporum f. sp. melonis) races 0 and 2 in WI 998FR, a gynoecious muskmelon (Cucumis melo), was determined by analyzing segregation of F₁, F₂, and BC₁ populations of crosses with susceptible cultivar PMR 45. Resistance to races 0 and 2 in WI 998FR was conferred by a single dominant gene. In allelism tests, resistance to races 0 and 2 in WI 998FR was determined to be controlled by the gene (Fom-1), which also confers resistance in the cultivar Doublon. The gene controlling resistance to races 0 and 2 in WI 998FR was different from the gene (Fom-3) controlling resistance to races 0 and 2 in the cultivar Perlita FR.