Status of Breeding for Biotic Stress Resistance in Tomato

Tomato ( Solanum lycopersicum L.) is a globally significant crop, both economically and nutritionally. However, its production is severely hampered by various biotic stresses, including bacterial, fungal, viral diseases, and nematode infestations. Traditional breeding methods have laid the groundwork for developing cultivars that are resistant to various diseases; however, the advent of molecular tools and biotechnological approaches has revolutionized breeding strategies. This chapter examines the impact of biotic stresses on tomato production, the necessity of breeding resistant varieties, the primary biotic stresses affecting tomatoes, available genetic resources, disease resistance mechanisms, and current breeding strategies. Furthermore, it discusses the challenges, limitations, and prospects in breeding tomatoes for biotic stress resistance.