Responses of red raspberry cultivars and selections toBotrytis Cinereaand other fruit-rotting fungi

Publisher Website
Google Scholar
Abstract
Summary Assessing infection in individually spaced fruit picked at intervals throughout the ripening season and stored for 72 h at ambient temperature and high humidity, was a rapid and effective method of evaluating breeding material for resistance to fruit-rotting fungi. Clonal differences in susceptibility to Botrytis cinerea, Cladosporium and Alternaria spp. were recorded in 10 red raspberry (Rubus idaeus) cvs and 13 selections. Low susceptibility to Botrytis was associated with low susceptibility to Cladosporium and Alternaria. Susceptibility to cane Botrytis was correlated with the incidence of fruit infection after storage. Fruit weight and susceptibility to Botrytis, Alternaria and Cladosporium infection were also associated, but there was some potential for selecting large-fruited rot-resistant types. Selections with the lowest incidence of fruit Botrytis all included R. occidentalis, the black raspberry, in their ancestry.