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302 results

  1. Ann. Tabac, 1995, sect. 2-27, p. 1-5., ISSN.0399-0354

    Breeding for PVY resistance in Solanum tuberosum

    ROUSSELLE P.; CHAUVIN L.; ROUSSELLE-BOURGEOIS F.
    INRA, Station d'Amélioration de la Pomme de Terre et des Plantes à Bulbes, Ploudaniel, France
    Since 1970, INRA has been working for breeding resistance against virus Y (PVY). The introduction into the breeding programme of genes conferring hypersensitivity or immunity originating in German clones was effective and produced clones with a good level ...
  2. Ann. Tabac, 1995, sect. 2-27, p. 25-34., ISSN.0399-0345

    Variability of PVY virus and similar potyviruses. Diversity of the source of resistance in pepper (Capsicum sp. )

    MARCHOUX G.; PALLOIX A.; GEBRE SELASSIE K.
    INRA, Station de Pathologie Végétale, Montfavet, France
    The group of potyviruses is one of the most damaging diseases of Solanaceous crops. They are spread by aphids in a non persistant fashion and in the presence of a factor which assists transmission of the vital code and are particularly redoubted and ...
  3. Ann. Tabac, 1995, sect. 2-27, p. 43-50., ISSN.0399-0345

    Study of the virulence of PVY isolates on tobacco: proposal for a classification integrating the resistance to necrosis

    BLANCARD D.; ANO G.; CAILLETEAU B.
    INRA - Institut du Tabac, Bergerac, France
    Having collected 40 or so isolates of PVY found in tobacco in France their virulence has been evaluated in 6 genotypes of tobacco. In function of their comportment and especially their capacity to induce necrotic symptoms we have been able to establish ...
  4. Ann. Tabac, 1995, sect. 2-27, p. 65-71., ISSN.0399-0354

    Evidence for the frequent occurrence of recombinant potato virus Y isolates

    REVERS F.; CANDRESSE T.; LE GALL O.
    INRA, Bordeaux, Station de Pathologie végétale, Villenave d'Ornon, France
    Although there is a growing body of evidence suggesting that RNA recombination is one of the driving forces behind RNA plant virus evolution, there has been no study aimed at the specific detection of recombinant viral isolates. We have devised a strategy ...
  5. Ann. Tabac, 1995, sect. 2-27, p. 7-16., ISSN.0399-0345

    Taxonomic relationships between the distinct populations of potato virus Y based on the biological, serological and genomic properties. Definition of pathotypes on potato

    LE ROMANCER M.
    INRA, Station de Pathologie Végétale, Rennes-le-Rheu, France.
    Three independent taxonomic keys connected with the host specificity are currently used to describe the biological variability within the potato virus Y (PVY) species that infects tobacco, tomato, pepper and potato. Differences in the taxonomic criteria ...