Search Results

109 results

  1. CORESTA Meeting, Agronomy/Phytopathology, 2013, Brufa di Torgiano, APPOST 14

    Production characteristics of four Oriental tobacco lines resistant to black shank (Phytophthora parasitica var. nicotianae)

    DIMITRIESKI M.; MICESKA G.; KORUBIN-ALEKSOSKA A.
    University "St.Kliment Ohridski" - Bitola, Scientific Tobacco Institute - Prilep, Republic of Macedonia
    The aim of the investigation was to evaluate morphological, production and qualitative traits of four newly created fertile inbred lines and their resistance to black shank disease (Phytophthora parasitica var. nicotianae), compared to the susceptible ...
  2. CORESTA Meeting, Agronomy/Phytopathology, Rovinj, 2009, APPOST 07

    Production properties of the new lines and varieties of Prilep tobacco resistant to powdery mildew

    MICESKA G.; DIMITRIESKI M.
    University ''St. Kliment Ohridski'' - Bitola, Macedonia
    Powdery mildew, caused by the pathogen Erysiphe cichoracearum D.C., is one of the earliest discovered diseases on tobacco in R. Macedonia. In humid and rainy summer conditions it often provokes severe losses, with 39% decrease in yield and 80% decrease in ...
  3. Beitr. Tabakforsch. Int./Contrib. Tob. Research, 2008, 23-2, p. 115-20., ISSN.0173-783X

    Evaluation of aroma in Oriental tobaccos as based on valeric acid gas chromatography

    DAGNON S.; TASHEVA R.; STOILOVA A.
    Inst. for Tobacco and Tobacco Products, Plovdiv, Bulgaria
    Levels of valeric acids (isovaleric and 3-methylvaleric) in leaves and smoke of different tobacco types were quantified by capillary gas chromatography (GC) using flame ionization detector (FID). The aroma characteristics of the smoke were scored by ...
  4. 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 limited due to ...
  5. 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 propose a ...
  6. 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 ...
  7. Beitr. Tabakforsch. Int./Contrib. Tob. Research, 2002, 20-4, p. 301-11., ISSN.0173-783X

    Wild Nicotiana species as a source of cytoplasmic male sterility in Nicotiana tabacum

    NIKOVA V.; VLADOVA R.
    D. Kostov Inst. of Genetics, Bulgarian Academy of Sciences, Sofia, Bulgaria
    The results of our experiments executed to obtain tobacco male sterile lines through interspecific hybridization are summarized. Ten wild species from the genus Nicotiana: N. excelsior (exc), N. amplexicaulis (amp), N. rustica (rus), Nicotiana glauca (gla ...
  8. Beitr. Tabakforsch. Int./Contrib. Tob. Research, 2003, 20-5, p. 355-9., ISSN.0173-783X.

    Application of pattern recognition method for color assessment of oriental tobacco based on HPLC of polyphenols

    DAGNON S.; EDREVA A.
    Inst. for Tobacco and Tobacco Products, Plovdiv, Bulgaria
    The color of Oriental tobaccos was organoleptically assayed, and high performance liquid chromatography (HPLC) of polyphenols was performed. The major tobacco polyphenols (chlorogenic acid, its isomers, and rutin), as well as scopoletin and kaempferol-3 ...