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4 results

  1. CORESTA Meeting, Agronomy/Phytopathology, Santa Cruz do Sul, 2005, APOST 24

    Hybrid seed production in tobacco by using male sterile plants

    NIKOVA V.; NIKOLOV E.; IANCHEVA A.; PANDEVA R.; PETKOVA A.
    Institute of Genetics, Sofia, Bulgaria; Tobacco and Tobacco Products Institute, Plovdiv, Bulgaria; Reg. Ctre for Scientific Investig. & Prod. of Tobacco, Haskovo, Bulgaria.
    The introduction of hybrid crop varieties has enabled spectacular growth in productivity owing to hybrid vigor and increased uniformity. To produce hybrid seeds, a pollination control system is required to prevent unwanted self-pollination. New ...
  2. CORESTA Meeting, Agronomy/Phytopathology, Bucharest, 2003, APOST 11

    Nicotiana benthamiana Domin. as a source of aphid resistance in N. tabacum L

    KRUSTEVA D.; NIKOVA V.; VLADOVA R.; DIMITROV B.; PETKOVA A.; IANCHEVA A.
    Bulgarian Academy of Science, Institute of Genetics, Sofia, Bulgaria.
    Tobacco aphids annually cause considerable damage to tobacco production, reducing the yield and in addition transmitting a number of viral pathogens to tobacco. The wild tobacco species N. benthamiana Domin is highly resistant to aphids. Although the ...
  3. Bull. Spec. CORESTA Congress, Lisbon, 2000, p. 136, PPOST4

    Production of fertile progenies of Nicotiana sylvestris Speg. et Comes x N. tabacum L. hybrid using in vitro techniques

    NIKOVA V.; PUNDEVA R.; VLADOVA R.; IANCHEVA A.
    Bulgarian Academy of Science, Institute of Genetics, Sofia, Bulgaria.
    Interspecific cross of Nicotiana sylvestris (n=12) pollinated with N. tabacum (n=24) was included in the present study. F 1 plants combined morphological features of both parents: intermediate stem and leaves, flowers with sylvestris fragrance, with ...