The Serological Properties of Eutypa Armeniacae Mycelium and Ascospores

Abstract

In epidemiological studies of the apricot vascular pathogen Eutypa armeniacae Hansf. & Carter in this laboratory (Moller and Carter 1965; Carter and Moller 1967) some diagnostic problems have been encountered. The pathogen is sufficiently variable in culture to be confused with other Ascomycetes, such as species of Valsa and Cryptovalsa which may colonize dead vascular tissue below pruning wounds which have been invaded by E. armeniacae. It is also difficult to differentiate E. armeniacae ascospores from those of related Ascomycetes caught in spore traps during wet weather.