Summary
The occorrence of potato mop-top virus (PMTV) was assessed by two different soil sampling methods. PMTV was prevalent in southwestern Sweden but was not detected in the northern part of the country. In storage trials more symptoms developed in tubers kept at 9°C than 4 °C. irrespective of the cultivar. Cutting the tubers enhanced post storage symptom develoment in some cultivars. Of 14 cultivars grown in Sweden, those used for crisp products were more inclined to develop spraing than the others. A comparison of the severity of PMTV symptoms in field trials in Sweden. Denmark and Finland indicated substantial geographic variation in the relative susceptibility of different cultivars suggesting variation among isolates of the virus. From glasshouse experiments it was found that inoculations done at flower bud development or at flowering resulted in most spraing. Cultivar trials in pots produced a low level of spraing symptoms in general.
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Sandgren, M. Potato mop-top virus (PMTV): distribution in Sweden, development of symptoms during storage and cultivar trials in field and glasshouse. Potato Res 38, 379–389 (1995). https://doi.org/10.1007/BF02357743
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DOI: https://doi.org/10.1007/BF02357743