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159 results

  1. Ann. Tabac, 1996, Sect. 2-28, p. 1-12., ISSN.0399-0354

    Transfer of male sterile characteristics in tobacco by androgenesis in situ : importance of the method in selection programmes

    HORLOW C.; DELON R.; BARDON J.C.
    SEITA, Institut du Tabac, Bergerac, France
    From 1989 to 1991 studies were conducted to compare the interest of two methods: back-cross and spontaneous androgenesis to convert fertile tobacco lines into sterile lines and the influence of several cytoplasms. In two years, it is possible, with the ...
  2. Ann. Tabac, 1997, Sect. 2-29, p. 27-32., ISSN.0399-0354

    A biochemical study of tobacco subjected to cotyledon test : effect of magnesium, reactions of resistant and non resistant plants to Peronospora tabacina. VIII. A cytochemical study of lignin and phenolics

    GEORGIEVA I.D.; DELON R.; EDREVA A.
    D. Kostov Inst. of Genetics, Bulgarian Academy of Sciences, Sofia, Bulgaria
    The cytochemical localisation of lignin and phenolics in P. tabacina-infected susceptible and resistant tobacco genotypes was investigated. The work was carried out with seedlings grown according to the cotyledon test as a model system. It involved a Knop ...
  3. Ann. Tabac, 1997, Sect. 2-29, p. 33-36., ISSN.0399-0354

    Chemical control of lateral suckers in Virginia tobacco, by using some newly introduced growth regulators

    COVARELLI G.
    Université de Pérouse, Institut d'agronomie générale et des cultures herbacées, Faculté d'agronomie, Perugia - Italy.
    Three field experimental trials were carried out from 1993 to 1995, in order to assess the possibility of controlling lateral suckers in tobacco with some recently introduced chemicals, which should allow for a reduction in the rate of the most commonly ...
  4. Ann. Tabac, 1997, Sect. 2-29, p. 54-9., ISSN.0399-0354

    Induction of acidic pathogenesis-related (PR-1) proteins in Erysiphe cichoracearum D.C.-infected tobacco leaves

    EDREVA A.; COUSSIRAT J.C.; DELON R.
    D. Kostov Inst. of Genetics, Bulgarian Academy of Sciences, Sofia, Bulgaria
    It is demonstrated that in N. tabacum leaves acidic pathogenesis-related (PR-1) proteins are induced by the obligatory ectoparasitic fungus Erysiphe cichoracearum, causative agent of tobacco powdery mildew. No difference was shown between the responses of ...
  5. Ann. Tabac, 1997, Sect. 2-29, p. 61-72., ISSN.0399-0354

    Potential effects of sahelian nematophagous fungi against Meloidogyne mayaguensis on tobacco (Nicotiana tabacum L. var. Paraguay x Claro)

    DUPONNOIS R.; MATEILLE T.; BA A.
    ORSTOM, Lab. de Nématologie, Dakar, Sénégal.
    Tobacco Nicotiana tabacum L. var Paraguay x Claro is susceptible to the root-knot nematode Meloidogyne mayaguensis, which is widesprayed in Senegal. Most of the strains of the nematophagous fungi (Arthrobotrys oligospora, A. conoides, Arthrobotrys sp., ...