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  1. Bull. Spec. CORESTA Congress, Harare 1994, p. 138, PPOST 11

    Overcoming the non-crossability between N. rustica var. Brasilia L. and N. tabacum - creation of wild fire resistant F1 hybrids

    KRUSTEVA D.
    D. Kostov Inst. of Genetics, Bulgarian Academy of Sciences, Sofia, Bulgaria
    The purpose of the present investigation is the overcoming of the non-crossability between species N. rustica var. Brasilia (2n = 48) and N. tabacum (2n = 48) to create of wild fire resistant tobacco hybrids and lines. The initial material used for ...
  2. Bull. Spec. CORESTA Congress, Harare 1994, p. 142, PPOST 15

    Investigation of cytoplasmic-nuclear interactions and manifestation of cytoplasmic male sterility in tobacco

    NIKOVA V.; VLADOVA R.; PANDEVA R.; SHABANOV D.; NIKOLOV E.; KANEVA S.
    Bulgarian Academy of Science, Institute of Genetics, Sofia, Bulgaria.
    Cytoplasmic male sterility (CMS) is defined as the inability to produce functional pollen with preservation of normal female fertility. CMS in tobacco is caused by a combined action of nuclear genes and extrachromosomal factors and is an useful tool for ...
  3. Bull. Spec. CORESTA Congress, Harare 1994, p. 77, APOST 18

    Establishment of glyphosate-resistant tobacco cultivars via in vitro techniques

    NEDKOVSKA M.; NIKOVA V.; TINEVA N.
    Bulgarian Academy of Science, Institute of Genetics, Sofia, Bulgaria.
    The objectives of this study were the selection of herbicide resistant variant of important Bulgarian tobacco cultivars from callus cultures, evaluation of the expression of this resistance in tobacco regenerants, their seed progenies by cytological and ...