Life cycle and epidemiologyof Verticillium: Chapter 4

Amsterdam

1981

81-111

Sonderdruck

40003254

Verticillium spp. are responsible for some of the world's most important diseases affecting vegetable, field, tree, and ornamental crops. The most important dieseases are caused by five species as described by Isaac (1967), later supported by Smith (1965) and Schnathorst (1973a). These species are Verticillium alto-atrum Reinke Berth., V. dahliae Kleb., V. nigrescens Pethybr., V. nubilum Pethybr., and V. tricorpus Isaac. Most of the crop losses are caused by V. albo-atrum and V. dahliae; V. dahliae is more widely involved as a pathogen. Since the bulk of the research on Vertilicillium wilt diseases has involved V. albo-atrum and V. Dahliae, most of this review will focus on the life cycle and epidemiological aspects of these two species.