Potato virus S (PVS): puzzling virus for potato breeders and seed producers

https://doi.org/10.17221/10581-PPSCitation:Dědič P., Ptáček J., Horáčková V., Matoušek V., Čeřovská N., Filigarová M. (2002): Potato virus S (PVS): puzzling virus for potato breeders and seed producers. Plant Protect. Sci., 38: 648-651.
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In the framework of PVS eradication from breeding materials of Czech potato cultivars, the systematic research was devoted to: susceptibility of cultivars, occurrence of PVS in imported and domestic materials, and to maintenance of virus-free basic grades potatoes on breeding stations. In the field-exposure trials was proved high level of susceptibility of most cultivars to PVS and by contraries, gradualy increased proportion of maintained virus-free cultivars of foreign, as well as domestic origin. Nevertheless severe infestation still persist in some of them. The contemporary situation with maintenance of virus-free basic material in CR was demonstrated.
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