Inheritance of Spotted Wilt Resistance in the Tomato I. Identification of Strains of the Virus by the Resistance or Susceptibility of Tomato Species

Abstract

Strains of the tomato spotted wilt virus were separated from field-infected material and purified with a range of solanaceous species. These strains were classified into four groups, Tip Blight (TB), Necrotic (N), Ringspot (R), and Mild (M), according to the symptoms developed by susceptible tomato hosts.