Search Results

44 results

  1. CORESTA Meeting, Agronomy/Phytopathology, 2019, Victoria Falls, AP 14

    Field tests of loss-of-function tobacco lines of eIF(iso)4E for resistance to tobacco bushy top disease and agronomic traits

    KOGA K.(1); SHINJO A.(1); MAINJENI C.E.D.(2); MSANGOSOKO K.R.(2); UDAGAWA H.(1); TAKAKURA Y.(1)
    (1) Japan Tobacco Inc., Leaf Tobacco Research Center, Oyama, Tochigi, Japan; (2) Agricultural Research and Extension Trust, Department of Research and Technical Services, Lilongwe, Malawi
    Tobacco bushy top disease (TBTD) is one of the serious diseases affecting tobacco (Nicotiana tabacum L.) production in African countries such as Malawi, Zambia, Tanzania and Ethiopia. This disease is caused by a mixed infection of tobacco bushy top...
  2. CORESTA Meeting, Agronomy/Phytopathology, 2019, Victoria Falls, APPOST 05

    Influence of disease resistance on the yield and quality in Burley tobacco

    NAKAMURA T.; TAKEMATSU T.; IWAI Y.
    Japan Tobacco Inc., Leaf Tobacco Research Center, Oyama, Tochigi, Japan
    Tobacco breeders recognise empirically that introduction of certain disease resistance is accompanied by negative effects on agronomic traits such as decrease in yield and quality. Only a few studies have quantitatively clarified the negative effects...
  3. CORESTA Meeting, Agronomy/Phytopathology, 2017, Santa Cruz do Sul, AP 37

    Loss-of-function of a tobacco eukaryotic translation initiation factor confers resistance to tobacco bushy top virus

    SHINJO A.; TAKAKURA Y.; UDAGAWA H.; KOGA K.
    Japan Tobacco Inc., Leaf Tobacco Research Center, Oyama, Tochigi, Japan
    Tobacco bushy top disease causes severe damage to tobacco (Nicotiana tabacum) in Sub-Saharan African countries such as Malawi, Zambia and Tanzania. Reportedly this disease is caused by a complex of tobacco bushy top virus (TBTV, the genus Umbravirus)...
  4. CORESTA Meeting, Agronomy/Phytopathology, 2017, Santa Cruz do Sul, AP 45

    Preliminary study on the metabolites of Spirotetramat in tobacco for possible residue definition

    OYAMA K.(1); NAKABAYASHI T.(1); NAKAJIMA K.(1); VANN M.C.(2)
    (1) Japan Tobacco, Inc., Leaf Tobacco Research Center, Oyama-shi, Tochigi, Japan; (2) North Carolina State University, Department of Crop & Soil Sciences, Raleigh, NC, U.S.A.
    Residue definitions are determined for enforcement/risk assessment purposes when legislative Maximum Residue Levels for food/feed are established. Spirotetramat (SP) is an insecticide and has been selected as one of the Guidance Residue Level (GRL)...
  5. CORESTA Meeting, Agronomy/Phytopathology, 2017, Santa Cruz do Sul, AP 49

    Potential alternative control for Ephestia spp. using parasitoid wasps

    KÖHLER A.(1); PEZZINI C.(1); ROESCH F.(2); FEUERBORN M.(2)
    (1) Universidade de Santa Cruz do Sul (UNISC), Laboratory of Entomology, Santa Cruz do Sul, RS, Brazil; (2) Japan Tobacco International (JTI), Santa Cruz do Sul, RS, Brazil
    Different practices are already used to control lepidopteran pests in stored tobacco, mostly including chemical or physical practices, preventive or disinfesting. Biological methods, used more frequently in tobacco field sites, are not used yet in...
  6. CORESTA Meeting, Agronomy/Phytopathology, 2015, Izmir, Turkey, AP 24

    Effect of time and concentration on mortality of the cigarette beetle, Lasioderma serricorne (F.), fumigated with phosphine

    FUKAZAWA N.; TAKAHASHI R.
    Japan Tobacco Inc., Leaf Tobacco Research Center, Tochigi, Japan
    Fumigant efficacy is determined by its concentration (C) and exposure time (t). For typical fumigants such as methyl bromide, the product of C and t is constant (Ct = k) to produce a specific toxic effect for a given insect species. Under these...