Abstract:The progenies of the crosses of Cucumis species with different ploidities [allotetraploid C.hytivus(2n=3x=26,HHCC),allotriploid(2n=3x=26,HCC) and reciprocal F_1 hybirds(2n=2x=19,HC/CH)] and their parental materials were comparatively examined to study the