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9 results

  1. Bull. Spec. CORESTA Congress, Brighton, 1998, p. 103, APOST2

    Researches concerning the production of tobacco seedling in Float system using trays with cells

    DIMA A.; CIRNICI M.; CIUPERCA A.; MILITARU D.
    Central Research Station for Tobacco Culture and Industrialization, Bucharest, Romania.
    During 1996-1997 a programme for obtaining tobacco seedlings by unconventional methods was conducted in Romania. The tests were made in three experimental fields of the Central Research Station for Tobacco Growing and Industrialization in Bucharest,...
  2. Bull. Spec. CORESTA Congress, Brighton, 1998, p. 107, APOST8

    Types of Virginia Bright tobacco barns (or other vegetable materials) made in Romania

    RAC-HRISTOV C.; MARINESCU L.
    Central Research Station for Tobacco Culture and Industrialization, Bucharest, Romania.
    To be used in industrialisation process, green leaves of Virginia tobacco have to be harvested at proper time and then put to a yellowing, curing and fermentation technology treatment. When the green leaves are harvested the assimilation phenomenon...
  3. Bull. Spec. CORESTA Congress, Brighton, 1998, p. 145, PPOST05

    Using haploidy by androgenesis and embryoculture in tobacco breeding

    CIUPERCA A.; CIRNICI M.; DIMA A.
    Central Research Station for Tobacco Culture and Industrialization, Bucharest, Romania.
    In order to fulfill the main purposes of tobacco breeding (high yield potential, superior chemical and industrial quality, resistance to the main diseases of tobacco), the creation of a large genetic variability is needed. The classic methods for the...
  4. Bull. Spec. CORESTA Congress, Brighton, 1998, p. 150, PPOST12

    Study of Nicotiana ingulba Black. and its crossability with N. tabacum L

    NIKOVA V.; VLADOVA R.; PUNDEVA R.; PETKOVA A.; VLADOVSKA A.
    Bulgarian Academy of Science, Institute of Genetics, Sofia, Bulgaria.
    Nicotiana ingulba Black. belongs to the subgenus Petunioides , sec. Suaveolens . We determined its chromosome number as 2n=20. This species was successfully crossed with N. tabacum L, cv. Plovdiv 58, used as pollinator, and formed capsules with...
  5. Bull. Spec. CORESTA Congress, Brighton, 1998, p. 151, PPOST13

    Inheritance of the resistance to wildfire in Oriental and Virginia tobacco cultivars and lines

    KRUSTEVA D.; DIMITROV B.
    Bulgarian Academy of Science, Institute of Genetics, Sofia, Bulgaria.
    The wildfire ( Pseudomonas syringae p.v. tabaci ) is widely spread in Bulgaria. This disease causes severe injuries to tobacco plants. It kills the seedlings, reduces the yield and the quality of the cured leaves. Therefore, it is economically the...
  6. Bull. Spec. CORESTA Congress, Brighton, 1998, p. 152, PPOST14

    Resistance of tobacco to tobacco aphids (Myzus nicotianae Blackman) originating from N. gossei

    DIMITROV B.; KRUSTEVA D.
    Bulgarian Academy of Science, Institute of Genetics, Sofia, Bulgaria.
    The tobacco aphids ( Myzus nicotianae Blackman) are important pests of the tobacco crop in Bulgaria. Besides the reduction of tobacco yield and quality they transfer many virus diseases. The wild species N. gossei is used in tobacco immunobreeding...
  7. Bull. Spec. CORESTA Symposium, Winston-Salem, 1982, p. 20, S10, ISSN.0525-6240

    Concentration of semi-volatile components in cigarette smoke by puff number

    SAWADA H.; KAWAMOTO J.; KOTANI M.
    Daicel Chemical Industries Ltd. Filter Products R&D, Osaka, Japan
    The filtration efficiencies of cellulose acetate charcoal filters for removal of such semi-volatile compounds as acetaldehyde, isoprene, acetone, benzene, and toluene were studied. Acetaldehyde deliveries on a per puff basis were determined for the...
  8. Bull. Spec. CORESTA Symposium, Winston-Salem, 1982, p. 79, AP3, ISSN.0525-6240

    Dihaploid-type isogenous Lines and their use in tobacco quality improvement

    PATRASCU M.; EUGEN I.; DECULESCU G.
    Central Research Station for Tobacco Culture and Industrialization, Bucharest, Romania.
    Isogenous lines were obtained by doubling the chromosomal set of androgenetic haploids achieved byïn vitro"anther culture derived from inter- and intraspecific Nicotiana hybrids that were in the F1-F4 generation. Dihaploid genomes that include...