Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Observations on the susceptibility of Japanese apple cultivars and rootstock selections to fire blight.

Abstract

In experiments conducted during 1995 in Geneva, New York, USA, apple cultivars and rootstocks were evaluated for susceptibility to fire blight following controlled inoculation with Erwinia amylovora. Most of the × Japanese apple cultivars tested were susceptible to fire blight, but 'Himekami' was intermediate. Most of the × Morioka rootstock selections and the × Cornell University rootstock selections tested had levels of resistance similar to, or greater than, that of Malling 7 (M.7).