A new report on potato mop-top virus (PMTV) was published by Dr Andy Robinson, Potato Extension Agronomist at North Dakota State University/University of Minnesota, and colleagues at NDSU, Prof Neil Gudmestad, Shashi K.R. Yellareddygari and Owusu Domfeh. The latest report includes a table with 63 potato cultivars indicating if they are sensitive to insensitive to infection by the virus.
Once established in fields, powdery scab can survive for up to 18 years in the absence of a potato crop. Potato mop-top virus is of economic importance to potato growers throughout the U.S. because it may affect tuber quality and may be transferred from seed to daughter tubers.
The authors of the report say recent research work examined 63 cultivars and their sensitivity to PMTV. Most russet-skinned cultivars were insensitive to PMTV (less than 5 percent PMTV incidence), with the exception of Alpine Russet and the selection POR06V12-3. The red-, yellow- and white-skinned cultivars evaluated ranged from insensitive to sensitive (greater than 15 percent PMTV incidence).