Potato virus S^A—characteristics of an isolate from New Zealand

Abstract

The Andean strain of potato virus S (PVS^A) has been isolated from plants in potato (Solanum tuberosum) breeding plots and ware crops in New Zealand. Symptoms on indicator plants (particularly Chenopodium spp.), aphid transmission, and some physical characteristics of this isolate are consistent with those previously recorded overseas. Spread of this virus appears to be primarily through mechanical means. Control of PVS^A virus in New Zealand is dependent on the availability of high quality, virus‐tested seed lines.

Keywords:

• potato virus SA
• potato
• Solanum tuberosum
• aphid transmission
• Myzus persicae
• Aulacorthum solani