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A Dominant Gene Conferring Resistance to Fusarium Wilt in Cucumber. D. Netzer, Research Plant Pathologist, Agricultural Research Organization, Bet Dagan, Israel; S. Niego(2), and E. Galun(3). (2)(3)Plant Breeding Assistant, and Irene and David Schwartz Professor of Plant Genetics, respectively, Weizmann Institute of Science, Rehovot, Israel. Phytopathology 67:525-527. Accepted for publication 28 October 1976. Copyright 1977 The American Phytopathological Society, 3340 Pilot Knob Road, St. Paul, MN 55121. All rights reserved.. DOI: 10.1094/Phyto-67-525.

A single-spore culture of an isolate of Fusarium oxysporum f. sp. cucumerinum from a wilted cucumber plant in the Samaria area, was utilized to test wilt resistance in cucumber lines and cultivars. Only one inbred line, WIS-248, from the introduction collection at the Weizmann Institute of Science, showed resistance. This line also was resistant to additional isolates of F. oxysporum f. sp. cucumerinum. Analysis of progenies of crosses between the resistant WIS-248 line and a susceptible inbred cultivar (Shimshon) as well as of backcross progenies to the susceptible parental cultivar indicated that resistance to Fusarium wilt is controlled by a dominant gene tentatively designated Foc.

Additional keywords: Cucumis sativus, breeding for disease resistance.