Diagnostically susceptible host species and symptoms Brassica campestris ssp. Brassica campestris ssp. Diagnostically insusceptible host species Nicotiana tabacum . Maintenance and propagation hosts Brassica campestris ssp. Brassica campestris ssp.
Susceptible host species Bauhinia purpurea Brassica campestris ssp.
280 ratio 1.56. Cytopathology Inclusions absent from infected cells. Rep. Rothamsted exp. Stn. 1956, p.105. Potato Virus Dis.