| Summary: | In the continental temperate climatic area virotical infection of potato was conditioned by the sources of virotical infection and by then viroses vectors. In Huedin micro area, situated intermountain in Cluj County at 600 m altitude, which humid and cool climate and isolated in space in natural way. Were tested 4 types of potato varieties sensitive or resistant at the main viruses of potato: PVY and PLRV. The results of researches was demonstrated that potato seed production can be obtained in the same quality with those produced into the seed traditional areals, when specific elements of classical technology are respected, as they are: in field isolation, early picking up and elimination of any virused plant, systematically control diseases and predators invasion mainly aphids, vegetation interruption at maxim fly of aphids.
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