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Combining Genes for Resistance to Fusarium oxysporum f. sp. Lycopersici, Ralstonia Solanacearum and Meloidogyne Incognita in Tomato [Lycopersicon Lycopersicum (L.) Karsten]
Thesis Abstract:
This study was conducted to develop 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-1 x Yellow Plum, 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 F. oxysporum f. sp. lycopersici and R. solanacearum.
Resistance to root-knot nematode (Meloidogyne 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 F. oxysporum f. sp. lycopersici and M. incognita.
Florida MH-1 x 508 and CIRT 106 had potential as parents in tomato breeding. They had shown to possess genes for resistance to pathogens F. oxysporum f. sp. lycopersici, R. solanacearum, and M. incognita. These genes can be further combined in the development of hybrids with improved multiple disease resistance.