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6 results

  1. 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 ...
  2. Ann. Tabac, 1998, Sect. 2-30, p. 3-9., ISSN.0399-0354

    Possible relation between tobacco resistance to aphids (Myzus nicotianae Blackman) and phenolic compounds in glandular trichomes and leaf epidermis

    GEORGIEVA I.D.
    Bulgarian Academy of Science, Institute of Genetics, Sofia, Bulgaria.
    The localization of various phenolic compounds in tobacco leaves and their influence on the degree of infestation by aphids (Myzus nicotianae Blackman) were assessed. The leaves of both immune and resistant tobacco lines from the interspecific ...
  3. Bull. Spec. CORESTA Congress, Jerez de la Frontera, 1992, p. 58, AP12, ISSN.0525-6240

    Blue mold of tobacco : Biochemical and molecular mechanisms

    EDREVA A.; GEORGIEVA I.D.; COUSSIRAT J.C.; DELON R.
    Bulgarian Academy of Science, Institute of Genetics, Sofia, Bulgaria.
    Biochemical and molecular mechanisms underlying the pathogenesis of blue mold in tobacco are investigated. Profound shifts in the metabolism of diseased plant are established, related to enzymes with oxidative, hydrolytic and phenol synthesizing functions ...
  4. Ann. Tabac, 1989, Sect. 2-22, p. 95-101., 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. VII. A cytochemical study of the callose deposition

    GEORGIEVA I.D.; DELON R.; COUSSIRAT J.C.
    Institut of Genetics - Sofia, Bulgaria
    The callose deposition on the cell walls of one susceptible and two resistant tobacco varieties, infected with P. tabacina Adam was investigated using the fluorescent technique. It was established that the callose papillae didn't appear in the ...
  5. Bull. Spec. CORESTA Symposium, Kallithea, 1990, p. 183, PP01, ISSN.0525-6240

    Biochemical study of tobacco tested under"test-cotyledon"conditions : Effects of magnesium, reactions of plants resistant and sensitive to Peronospora tabacina. Cytochemical study of Callose

    GEORGIEVA I.D.; DELON R.; COUSSIRAT J.C.; EDREVA A.M.
    Institute of Genetics, Sofia, Bulgaria; Institut Expérimental du Tabac, Bergerac, France
    Tobacco obtained under cotyledon test conditions was inoculated with P. tabacina Adam conidia. The presence of callose deposits was detected in the cell walls of three genotypes. In the sensitive type, there was no formation of callose papillae in young ...