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59 results

  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 limited due to ...
  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 propose a ...
  3. 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 ...
  4. CORESTA Congress, Kyoto, 2004, APOST 02

    The role of heavy metals in the soil upon the technological, chemical and smoking qualities of tobacco

    PAUNESCU A.D.; PAUNESCU M.; PANCIU A.; CÂRNICI M.
    Romanian Parliament, Deputies House, Agricultural and Forestry Commission, Bucharest, Romania.
    For tobacco, the soil represents the main source for the elements of mineral nutrition which are taken over through specific mechanisms and in the required ration for a normal metabolic activity. The purpose of this study is that of watching the level of ...
  5. CORESTA Congress, Kyoto, 2004, APOST 22

    Researches concerning the effect of chlorine upon some qualitative and quantitative features of tobacco

    PAUNESCU A.D.; PAUNESCU M.; BRUTARU L.; CÂRNICI M.; MILITARU D.C.
    Romanian Parliament, Deputies House, Agricultural and Forestry Commission, Bucharest, Romania.
    By Following controlled experiments conducted in vegetation pots, the effect of chlorine used as potassium chloride upon yield and especially upon the smoking quality of tobacco was assessed. This problem occurred following the diminution of tobacco ...
  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), Nicotiana glauca (gla ...
  7. CORESTA Meeting, Agronomy/Phytopathology, Bucharest, 2003, AP 06

    Evolution of soil fertility in long-term design with Oriental tobacco (1982 - 2002)

    PAUNESCU A.D.; PAUNESCU M.; STEFANIC G.; UDRESCU E.
    Romanian Parliament, Deputies House, Agricultural and Forestry Commission, Bucharest, Romania.
    The experiments were conducted in a four-year rotation, of the type oats- tobacco- corn- corn, fertilizing with compost or compost added with PK, compared with the unfertilized control and a variant fertilized with mineral products (N 25 P 100 K 50). The ...
  8. CORESTA Meeting, Agronomy/Phytopathology, Bucharest, 2003, AP 07

    Environmentally-friendly aspects of tobacco zonation in Romania

    PAUNESCU A.D.; SECELEANU I.; PAUNESCU M.; VASU A.; MATEI S.
    Romanian Parliament, Deputies House, Agricultural and Forestry Commission, Bucharest, Romania.
    The purpose of these studies was to substantiate the assessment of ecological favourability, of the yield capacity of the lands (evaluation) in Romania, for tobacco growing. Quantitative criteria were established connected with the ecological features of ...