Search Results

367 results

  1. CORESTA Congress, Kunming, 2018, Agronomy/Phytopathology Groups, AP 30

    Identification of sucker control genes

    HAMANO K.; SUZUKI S.; SATO S.; ARAI M.; NEGISHI Y.; NOMURA A.; TSUKAHARA M.
    Japan Tobacco Inc., Leaf Tobacco Research Center, Oyama, Tochigi, Japan
    In tobacco, depending on strong shoot apical dominance, suckers grow vigorously after topping. A sucker can develop sequentially at least three times at each axil during the cultivation period. Suckers negatively affect tobacco yield and quality. ...
  2. CORESTA Congress, Kunming, 2018, Agronomy/Phytopathology Groups, AP 35

    Development of THA mutant line having markedly increased threonine in cured leaves

    KOIKE A.; NOGUCHI S.; TSUKUI S.; OGURO S.
    Japan Tobacco Inc., Leaf Tobacco Research Center, Oyama, Tochigi, Japan
    Threonine (Thr), an amino acid, is known to be related to tobacco smoking flavour and aroma. Obtaining Thr-rich cured tobacco leaves is difficult because Thr contents in fresh tobacco leaves are decreased drastically during curing processes. To increase ...
  3. CORESTA Congress, Kunming, 2018, Agronomy/Phytopathology Groups, AP 40

    Plant metabolism studies with 14C-maleic hydrazide (MH) in tobacco and evaluation of analytical methods

    TATENO A.(1); KISHI H.(1); NAKAYAMA K.(2); OYAMA K.(1); MIYOSHI M.(1)
    (1) Japan Tobacco Inc., Leaf Tobacco Research Center, Oyama, Tochigi, Japan; (2) Japan Tobacco Inc., Scientific and Regulatory Affairs Division, Tokyo, Japan
    Maleic hydrazide (MH) is used as a sucker control agent for tobacco. Reportedly, absorbed MH in tobacco plants is metabolized to its glucoside conjugates and is converted to the bound form. However, how much original MH can be converted to those forms in ...
  4. CORESTA Congress, Kunming, 2018, Agronomy/Phytopathology Groups, AP 43

    Pyrethroid resistance in the cigarette beetle Lasioderma serricorne (F.) (Coleoptera: Anobiidae)

    FUKAZAWA N.; TAKAHASHI R.
    Japan Tobacco Inc., Leaf Tobacco Research Center, Oyama, Tochigi, Japan
    Spraying application of contact insecticides onto building surfaces (walls and floors) is a key measure to control the cigarette beetle Lasioderma serricorne (F.) population in tobacco warehouses. Pyrethroids have been used widely as effective surface ...
  5. CORESTA Congress, Kunming, 2018, Agronomy/Phytopathology Groups, AP 45

    New genetic source for black shank resistance and genomic loci associated with its resistance

    SHINJO A.; KOGA K.; ONO T.; NOGUCHI S.
    Japan Tobacco Inc., Leaf Tobacco Research Center, Oyama, Tochigi, Japan
    Black shank causes severe yield loss of tobacco in Japan because of root and leaf infection by Phytophthora nicotianae, the causal agent of this disease. Several cultivated varieties in Japan have partial resistance derived from Florida 301, which is ...
  6. CORESTA Congress, Kunming, 2018, Agronomy/Phytopathology Groups, AP 47

    Enhanced resistance to potato virus Y (PVY) and resistance-breaking PVY in tobacco eIF4E-S and eIF(iso)4E-T double mutant

    TAKAKURA Y.; UDAGAWA H.; SHINJO A.; KOGA K.
    Japan Tobacco Inc., Leaf Tobacco Research Center, Oyama, Tochigi, Japan
    Eukaryotic translation-initiation factors in plants, eIF4E and eIF(iso)4E, play key roles in infection by potyviruses and other plant RNA viruses. Mutations in the genes encoding these factors might reduce susceptibility to viruses. They are the basis of ...
  7. CORESTA Congress, Kunming, 2018, Smoke Science/Product Technology Groups, ST 03

    Solvent-free extraction method for in vitro testing with tobacco vapor products

    ITO H.; KITAMURA N.
    Japan Tobacco Inc., Scientific Product Assessment Center, Yokohama, Kanagawa, Japan
    Since extracts made with emissions from ENDS and tobacco vapor products (TVP) generally exhibit weak biological responses in commonly used in vitro tests compared to those from conventional cigarettes, it is essential to generate very high concentration ...
  8. CORESTA Congress, Kunming, 2018, Smoke Science/Product Technology Groups, STPOST 17

    Evaluation of reduction in exposure to selected cigarette smoke constituents after switching to novel tobacco vapor product (NTV) use during a five-day confinement study in Japan

    TAKESHIGE Y.; YUKI D.; NAKAYA K.; FUTAMURA Y.
    Japan Tobacco Inc., Scientific Product Assessment Center, Yokohama, Kanagawa, Japan
    We recently developed a novel tobacco vapor product (NTV) that comprises a battery, a cartridge with a heater and nicotine-free liquid, and a tobacco capsule filled with tobacco blend. Vapor containing nicotine and flavor is produced by aerosol from the ...
  9. CORESTA Congress, Kunming, 2018, Smoke Science/Product Technology Groups, STPOST 18

    Evaluation of subjective effects and product use patterns of novel tobacco vapor product (NTV) use during a five-day confinement study in Japan

    NISHIHARA D.; YUKI D.; NAKAYA K.; TAKESHIGE Y.; FUTAMURA Y.
    Japan Tobacco Inc., Scientific Product Assessment Center, Yokohama, Kanagawa, Japan
    Some authorities have highlighted information relating to the abuse liability of tobacco products as key in reaching regulatory decisions. Although abuse liability should be assessed with multiple factors, one of the essential elements is the subjective ...
  10. CORESTA Congress, Kunming, 2018, Smoke Science/Product Technology Groups, STPOST 25

    A simplified analytical method for determining metals in e-liquid

    SHIMAZU A.(1); MIZUNO M.(2); NAGAE H.(2)
    (1) Japan Tobacco Inc., Product Quality Research Center, Tokyo, Japan; (2) Japan Tobacco Inc., Product Quality Research Center, Yokohama, Kanagawa, Japan
    An analytical method for simultaneous determination of eight metals in mainstream cigarette smoke using inductively coupled plasma mass spectrometry (ICP-MS) was reported at the Tobacco Science Research Conference (TSRC) in 2009. The method does not ...