Gynogenesis in a Dihaploid Line of Cucumber (Cucumis sativus L.)

Introduction. Until now, haploid cucumber plants (n = x = 7) have only been obtained by pollinating with irradiated pollen (e.g., gamma rays from Co), followed by haploid embryo culture (Truong-Andre, 1988; Niemirowicz-Szczytt and Duma de Vaulx, 1989; Sauton, 1989; Przyborowski and NiemirowiczSzczytt, 1994). Attempts to obtain cucumber haploids by different methods, including anther culture, have not been successful.