Author : Farid Hemon, A.

Summary : This study was conducted to developed and evaluate resistance of F1 hybrids of tomatoes to pathogen causing fusarium wilt, bacterial wilt and root-knot nematode. The progenies of the crosses Florida MH-1 x 508, Florida MH-1x Yellow Plum, and Florida x CIRT 106 and their respective reciprocals were found resistant to fusarium oxysporum f.sp.lycopersici. Florida MH-1 x 508 and its reciprocal cross produced hybrids resistant to Ralstonia solanacearum and to combined Fusarium oxysporum f.sp. lycopersici and Ralstonia solanacearum. Resistance to root-knot nematode (M. incognita) were obtained from crosses involving CIRT 106. The progenies of CIRT 106 x Florida MH-1 and CIRT 106 x Bonny Best and their respective reciprocals were resistant to combined Fusarium oxysporum f.sp. lycopersici and M. incognita. Florida MH-1, 508, and CIRT 106, have potential as parents in tomato breeding. They have been shown to possess genes for resistance to pathogens Fusarium oxysporum f.sp. lycopersici, Ralstonia solanacearum, and M. incognita. These genes can be further combined in the development of hybrids with improved multiple disease resistance.