Читать книгу Principles of Plant Genetics and Breeding - George Acquaah - Страница 235

One of the common breeding objectives in tomato is breeding for resistance to the most destructive pests and pathogens. Tomato hosts more than 200 species of a wide variety of pests and pathogens that can cause significant economic losses. Tomato powdery mildew caused by Oidium neolycopersici occurred for the first time in 1986 in The Netherlands (Paternotte 1988). Within 10 years it had spread to all European countries and is nowadays a worldwide tomato disease, except for Australia where another species (O. lycopersici) occurs (Kiss et al. 2001). Upon the outbreak of O. neolycopersici, all tomato cultivars were susceptible and this fungus was the only one to be controlled by fungicides in greenhouse tomato production in Northwest Europe (Huang et al. 2000). By 1996, our group was invited by Dutch vegetable seed companies to search for resistance genes against O. neolycopersici. Here I will use our practice on breeding tomatoes with resistance to powdery mildew as an example for introgression breeding.