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Heat treatment experiments with carnations for the elimination of carnation mottle and etched ring viruses

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Abstract

Plants of the carnation cultivar ‘Joker’, infected with carnation mottle and etched ring viruses, were subjected to a heat treatment at 38°C for 132 days. At intervals lateral shoots were taken and rooted. In some of these shoots carnation mottle virus could no longer be detected, even after repeated indexing onChenopodium amaranticolor. Extension of the duration of the heat treatment resulted in an increase in the percentage of mottle-free plants, but the absolute number decreased owing to deterioration of the plants due to the prolonged heat treatment. A heat treatment of 132 days did not inactivate carnation etched ring virus in the plants.

Samenvatting

Planten van de anjercultivar ‘Joker’, die besmet waren met het “carnation mottle” —en “carnation etched ring” — virus, werden gedurende 132 dagen bij een temperatuur van 38°C gehouden. Met tussenpozen werden er scheutjes van de planten afgehaald en beworteld. In een aantal van deze scheutjes bleek het “carnation mottle”-virus, zelfs na vijfmalige toetsing opChenopodium amaranticolor, niet meer aantoonbaar. Verlenging van de warmtebehandeling gaf een toename van het percentage genezen planten, hoewel het absolute aantal afnam als gevolg van beschadiging door de warm-tebehandeling. Een warmtebehandeling van 132 dagen leverde evenwel geen planten op die vrij waren van het “carnation etched ring”-virus.

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Part of this work was carried out during a stay of Mrs. J. Jordanova at the IPO, Wageningen.

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Hakkaart, F.A., Jordanova, J. Heat treatment experiments with carnations for the elimination of carnation mottle and etched ring viruses. Netherlands Journal of Plant Pathology 74, 146–149 (1968). https://doi.org/10.1007/BF01995925

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  • DOI: https://doi.org/10.1007/BF01995925

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