1. Ann. Tabac, 1987, Sect. 2, num. spéc., p. 93-104., 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. IV - A biochemical and cytochemical study of the beta-glucosidase

    EDREVA A.; GEORGIEVA J.D.; COUSSIRAT J.C.
    Institut of Genetics - Sofia, Bulgaria
    The beta-glucosidase (E.C. 3.2.1.20) activity of tobacco cotyledons infected with P. tabacina was investigated using chemical and cytochemical methods in the early phases of the disease before the appearance of symptoms. It was shown that the...
  2. Bull. Spec. CORESTA Congress, Guangzhou 1988, p. 141, P-14

    A preliminary study on the fungus resistance and toxin tolerance of the black shank resistant mutant R400

    ZHOU J.M.; ZHOU J.P.
    Chinese Academy of Science, Institute of Genetics, Beijing, China
    R400 is the first mutant resistant to black shank selected from"Small Golden", a variety highly susceptible to black shank, for toxin tolerance through anther culture. The disease resistance of callus and toxin tolerance of callus and protoplasts...
  3. Bull. Spec. CORESTA Congress, Guangzhou 1988, p. 144, P-18

    Behaviour of a set of species or the genus Nicotiana and various varieties of tobacco versus powdery mildew (E. cichoracearum) in Bulgaria and in France

    PALAKARTCHEVA M.; KRUSTEVA D.; DELON R.
    (1) Institute of Genetics, Sofia, Bulgaria; (2) SEITA, France
    The pathogenicity and physiological specialization of Erysiphe cichoracearum, the agent responsible for tobacco powdery mildew have been studied in Bulgaria and in France. Inoculations were performed, using young plants obtained under conditions in...
  4. Bull. Spec. CORESTA Congress, Guangzhou 1988, p. 97, A-16

    Effect of water deficit or water excess during the different development stages on tobacco"Burley"

    POSTIGLIONE L.; BARBIERI G.; DE FALCO E.
    University of Naples ''Federico II'', Dept. of Agricultural Engineering and Agronomy, Portici, Naples, Italy.
    A two-year experiment was carried out in the Sele river Plain (Southern Italy) in order to evaluate the effects of water deficit or water excess on the performance of"Burley C103". Nine irrigation treatments were compared : 1) non irrigated control...