NATURALLY-OCCURRING VIRAL-INFECTIONS IN SOLANUM-BREVIDENS AND S-FERNANDEZIANUM uri icon

abstract

  • Two species of wild potato, S. brevidens and S. fernandezianum, were surveyed for six potato-infecting viruses in their natural habitats in the Puerto Montt Region and Robinson Crusoe Island of Chile, respectively. Potato viruses S (PVS), M (PVM) and X (PVX) and potato yellowing virus (PYV) were found in some clones of the Chilean Potato Germplasm Collection, whereas only one population of S. brevidens out of six was virus-infected, namely by PVS. The cultivated potatoes on Robinson Crusoe Island were infected by PVS, PVM and PVX and infested by Aulacorthum solani and Myzus persicae, whereas S. fernandezianum was infected by PYV and infested by A. circumflexum, A. solani and Aphis spp.

publication date

  • 1992
  • 1992