1. CORESTA Congress, Paris, 2006, APOST 07

    Genetic improvement of Nicotiana tabacum by applying remote hybridization and biotechnological methods

    NIKOVA V.; IANCHEVA A.M.; VLADOVA R.; PANDEVA R.; PETKOVA A.
    Bulgarian Academy of Science, Institute of Genetics, Sofia, Bulgaria.
    Wild Nicotiana species possess a high potential of useful features. Interspecific hybridization is a very effective method for the introducing of desired characters into tobacco and achieving crop improvement. Its successful realization is...
  2. CORESTA Congress, Paris, 2006, APOST 24

    Color and aroma of tobacco: a facilitated approach for their objective evaluation in Oriental tobaccos and for cultivar classification within Virginia and Oriental tobacco types

    DAGNON S.; EDREVA A.; VLADOVSKA A.
    Tobacco and Tobacco Products Institutes, Plovdiv, Bulgaria; D. Kostov Inst. of Genetics, Bulgarian Academy of Sciences, Sofia, Bulgaria.
    In the routine practice the evaluation of colour and smoke aroma, major qualitative characteristics of tobacco, is mainly based on organoleptic estimates by expert panels, with this suffering from subjectivity, high costs and health hazards. We...
  3. Bull. Spec. CORESTA Congress, Jerez de la Frontera, 1992, p. 129, APOST3, ISSN.0525-6240

    Cytological and morphological evaluation of glyphosate-tolerant tobacco regenerated plants and their progeny

    NEDKOVSKA M.; NIKOVA V.; DOROSSIEV L.
    Bulgarian Academy of Science, Institute of Genetics, Sofia, Bulgaria.
    The objective of this study was to evaluate the expression of herbicide-tolerance in tobacco regenerants from important Bulgarian tobacco cultivars and their seed progeny by cytological and morphological analyses. The herbicide used in this...
  4. Bull. Spec. CORESTA Congress, Jerez de la Frontera, 1992, p. 132, APOST6, ISSN.0525-6240

    Development of cytoplasmically male sterile tobacco forms by crossing Nicotiana knightiana x N. tabacum

    NIKOVA V.; SHABANOV D.
    Bulgarian Academy of Science, Institute of Genetics, Sofia, Bulgaria.
    Cytoplasmic male sterility, (CMS), in tobacco is of great importance for the heterosis breeding, saving the time-consuming process for emasculation. Crossing the wild Nicotiana knightiana with N. tabacum/cv. Djbec 44, seeds of good germinating...
  5. Bull. Spec. CORESTA Congress, Jerez de la Frontera, 1992, p. 163, PPOST1, ISSN.0525-6240

    Results of hybridization between the species Nicotiana gossei D. (2n=36) and Nicotiana tabacum L. (2n=48)

    PALAKARTCHEVA M.T.; DOROSSIEV L.
    Bulgarian Academy of Science, Institute of Genetics, Sofia, Bulgaria.
    Sterile hybrids were produced as a result of hybridization between, N. gossei and N. tabacum, cv. Kroumovgrad 90. Fertile regenerants of N. gossei x N. tabacum were developed by application of in vitro methods. Hybrids in F1 and their regenerants...
  6. 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...
  7. Bull. Spec. CORESTA Symposium, Kallithea, 1990, P. 142, 142, ISSN.0525-6240

    Transfer of cytoplasmic male sterility to Nicotiana tabacum L. by protoplast fusion

    NIKOVA V.; MENCZEL I.
    Institute of Genetics, Sofia, Bulgaria. Institute of Plant Physiology. Szeged. Hungary.
    Protoplast fusion was used for producing cytoplasmic male sterile (CMS) tobaccos within a shorter period of time (one year) than the conventional backcross method, for which several years are required. Mesophyl protoplasts of CMS line (N. tabacum cv....
  8. Bull. Spec. CORESTA Symposium, Kallithea, 1990, p. 141, A32, ISSN.0525-6240

    Study of cytoplasmic sterile male hybrids (CMS)-cytoplasm derived from Nicotiana goodspeedii

    PALAKARTCHEVA M.; YANTCHEVA A.; DELON R.
    Bulgarian Academy of Science, Institute of Genetics, Sofia, Bulgaria; Institut de Tabac de Bergerac, France
    The aim of our research was the creation of cytoplasmic male hybrids (cytoplasm derived from N. goodspeedii. Sterile male lines with) sterile male cytoplasm from N. goodspeedii were used on the one hand on the other, the French varieties BB30 and...