The Competitive Saprophytic Abilities of Typhula incarnata and T. ishikariensis

Abstract

The competitive saprophytic abilities (CSA) of Typhula incarnata and T. ishikariensis, snow mold pathogens, were estimated by the Cambridge method. T. incarnata showed an excellent CSA, but that of T. ishikariensis was poor. T. ishikariensis biotypes B and C were most virulent followed by biotype A, and T. incarnata was least virulent. A compensating relationship between CSA and virulence was revealed in these two pathogens. This relationship was not clear in the biotypes of T. ishikariensis.