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Control of papaya ringspot virus by seedling inoculation with mild virus strains



Control of papaya ringspot virus by seedling inoculation with mild virus strains



Extension Bulletin, ASPAC Food and Fertilizer Technology Center, Taiwan (232): 1-9



Papaw ringspot virus is the major factor limiting pawpaw production in Taiwan. The unavailability of resistant sources and the restrictive host range of PRV make cross protection an attractive control measure. Efforts to select mild strs. from natural populations were unsuccessful. However, 2 mild mutants (PRV HA 5-1 and 6-1) which cause symptomless infection were induced by nitrous-acid mutation. The mutants provide a high degree of cross protection under greenhouse conditions.

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Accession: 001554661

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