Dědič P. author Ptáček J. author Horáčková V. author Matoušek V. author Čeřovská N. author Filigarová M. author text journal article 2002 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. Potato virus S; eradication; susceptibility 10.17221/10581-PPS https://pps.agriculturejournals.cz/artkey/pps-200211-0119.php https://pps.agriculturejournals.cz/artkey/pps-200211-0119.php continuing 38 11 648 651 2002 12122580 periodical academic journal