摘要 : Potato rough dwarf virus (PRDV) was originally described in Argentina while potato virus P (PVP) was first reported from Brazil . These viruses were essentially indistinguishable in test plant reactions when inoculated onto 21 dif... 展开 Potato rough dwarf virus (PRDV) was originally described in Argentina while potato virus P (PVP) was first reported from Brazil . These viruses were essentially indistinguishable in test plant reactions when inoculated onto 21 different solanaceous species . Of the 10 sola-naceous species susceptible to both PRDV and PVP, the majority did not display symptoms. Only Nicotiana meg-alosiphon and N. occidentalis showed systemic symptoms consisting of leaf deformations, leaf rugosity and/or inter-veinal chlorosis. Six of the 7 potato varieties tested were susceptible to both PRDV and PVP, but visible symptoms consisting of plant stunting and the aforementioned leaf symptoms were only evident in second-generation plants of the potato cvs. Primicia and Sierra Volcan infected by PRDV . 收起