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4 results

  1. Tob. Sci., 1995, 39-2, p. 38-42., ISSN.0082-4623

    Hybridization between Nicotiana gossei Domin and N. tabacum L. for development of Oriental tobacco lines resistant to tobacco aphids and diseases

    PALAKARCHEVA M.; STANEVA M.; TSANOVA E.
    Bulgarian Academy of Science, Institute of Genetics, Sofia, Bulgaria.
    The disease- and aphid-resistant species, N. gossei (2n=36), was crossed with N. tabacum cv. Kroumovgrad 90, an Oriental tobacco type. The F 1 hybrids from this cross were all sterile. Regenerates of this cross were developed by in vitro methods, and they ...
  2. Ann. Tabac, 1991, Sect. 2-23, p. 81-7., ISSN.0399-0354

    Genetic study of Erysiphe cichoracearum D.C. resistance of PMR Burley 21 cultivar and some morphological characters that influence the tobacco yield

    TOUNKARA F.; PALAKARCHEVA M.
    Institut of Genetics - Plant Breeding, Sofia, Bulgaria.
    The aim of the present investigation is to study the genetic control of Erysiphe cichoracearum resistance of PMR Burley 21 cultivar, coming from N. tabacum. At the same time the inheritance of some quantitative characters was studied, that influence the ...
  3. Bull. Spec. CORESTA Congress, Manila, 1980, p. 102, AP08, ISSN.0525-6240

    Studies on the backcrossing effect of N. tabacum in hybrids, obtained from the amphidiploids N. tabacum L. x N. debneyi D (2n=96) and N. goodspeedii W. x N. tabacum L. (2n=88)

    PALAKARCHEVA M.; EDREVA A.; CHOLAKOVA N.
    Bulgarian Academy of Science, Institute of Genetics, Sofia, Bulgaria.
    In present work the results of backcrossing amphidiploids N. tabacum L. x N. debneyi D. (2n=96) and N. goodspeedii W. x N. tabacum L. (2n=88) with N. tabacum L._ cultivar Djebel basma 359 oriental small-leaf tobacco type, are reported. The aim of the ...