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82 results

  1. Tobacco Science & Technology, 2010, 9, p. 5-9., ISSN.1002-0861

    Mathematical model for equilibrium moisture content of tobacco leaf under high temperature and relative humidity

    ZHENG SONG-JIN(1,2); LI BIN(1); WANG HONG-SHENG(1)
    1. Key Laboratory of Tobacco Processing Technology, CNTC, Zhengzhou 450001, P.R. China; 2. Technology Center of China Tobacco Hebei Industrial Corporation, Shijiazhuang 050051, P.R. China
    In order to study the moisture absorption of tobacco leaf during processing, the absorption characteristic curves of tobacco leaf under different relative humidities (in the range of 30% to 90%) and temperatures (60, 70 and 80 °C), respectively, were...
  2. CORESTA Meeting, Agronomy/Phytopathology, Krakow, 2007, AP 28

    Orobanche ramosa on tobacco in France: extension, biology and control methods

    BRAULT-HERNANDEZ M.; MORNET F.
    Université Pierre et Marie Curie, Laboratoire de Parasitologie Végétale, Paris, France
    For a few years, in France, Orobanche ramosa L. (broomrape) has become a real agronomic threat in three important industrial crops: winter rape, tobacco and hemp. In 2003, it was observed parasitizing tobacco and hemp and 22 out of the 96 French...
  3. 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...
  4. 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...
  5. 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...
  6. 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 ),...