Help

Search Results

624 results

  1. CORESTA Meeting, Agronomy/Phytopathology, 2023, Cancun, AP 33

    Tobacco leaf transcriptomic analysis unveils differential effects of potassium chloride and potassium sulphate on formation of tobacco specific nitrosamines

    SINGH S.K.(1); PATTANAIK S.(1); WEBB A.B.(2); BAILEY W.A.(2); PEARCE R.C.(2); LING Yuan(1,2)
    (1) Kentucky Tobacco Research and Development Center, and (2) Department of Plant and Soil Sciences, University of Kentucky, Lexington, KY, U.S.A.
    Tobacco specific nitrosamines (TSNA), such as N’-nitrosonornicotine (NNN), are carcinogenic metabolites accumulated in tobacco leaves during curing. Nornicotine is the major precursor of NNN. A recent study has shown that applying potassium chloride...
  3. CORESTA Meeting, Agronomy/Phytopathology, 2023, Cancun, AP 40

    Correlation of management practices and environmental conditions on incidence of angular leaf spot in dark fire-cured tobacco

    WEBB A.B.; BAILEY W.A.
    University of Kentucky, Research & Education Center, Princeton, KY, U.S.A.
    An observational study was conducted in 2020, 2021, and 2022 to evaluate possible correlations between grower management practices, environmental factors, and angular leaf spot (Pseudomonas syringae pv. tabaci tox-) incidence in dark tobacco fields...
  4. CORESTA Meeting, Agronomy/Phytopathology, 2023, Cancun, AP 44

    Field evaluation of fungicides for management of frogeye leaf spot caused by Cercospora nicotianae on Burley tobacco

    MARTINEZ-OCHOA N.; PEARCE R.C.
    University of Kentucky, Plant and Soils Department, Lexington, KY, U.S.A.
    Frogeye leaf spot (FELS) caused by Cercospora nicotianae has been increasing in severity in recent years in tobacco grown in Kentucky. Current management practices include the use of fungicides such as azoxystrobin since 2005, but within the last ten...
  5. CORESTA Meeting, Agronomy/Phytopathology, 2023, Cancun, AP 62

    Understanding the molecular mechanism underlying the poor leaf quality of the low alkaloid tobacco varieties

    PATRA B.; FISHER C.R.; SINGH S.K.; KINNEY J.
    Kentucky Tobacco Research and Development Center, University of Kentucky, Lexington, KY, U.S.A.
    The low nicotine (LA) phenotypes of Burley tobacco are associated with lower yields, delayed ripening, and senescence resulting in poor cured leaf quality and higher susceptibility to insect herbivory compared to the high alkaloid (HA) variety....
  7. CORESTA Meeting, Smoke Science/Product Technology, 2023, Cancun, IG 02; CORESTA Meeting, Agronomy/Phytopathology, 2023, Cancun, IG 02 (also presented at TSRC 2023)

    Potential ultra-low nicotine limit in tobacco – can we meet it?

    FISHER A.M.(1); FISHER C.R.(1); YANG S.(2); PATRA B.(1); SLONE S.(3); JI H.(1); KINNEY J.(1)
    (1) Kentucky Tobacco Research and Development Center, University of Kentucky, Lexington, KY, U.S.A.; (2) United States Department of Agriculture, Fargo, ND, U.S.A.; (3) Dr. Bing Zhang Department of Statistics, University of Kentucky, Lexington, KY, U.S.A.
    The FDA has sought comments on a possible nicotine limit of 0.3-0.5 mg/g in the filler of cigarettes. Over the years, we have tested the conventional low alkaloid (LA) nic1nic2 mutants, agronomic practices known to lower alkaloids, and a combination...
  8. CORESTA Meeting, Smoke Science/Product Technology, 2023, Cancun, ST 14 (also presented at TSRC 2023)

    Development of certified reference cigars representing three product categories

    McNEES C.R.(1); JI H.(1); SLONE S.(2); CRAFT M.(1); SHELTON B.(3); SHEARER A.(3); HALL J.T.(1); FISHER A.M.(1); FISHER C.R.(1); YUAN L.(1); CHAMBERS O.(4)
    (1) Kentucky Tobacco Research and Development Center, University of Kentucky, Lexington, KY, U.S.A.; (2) Dr. Bing Zhang Department of Statistics, University of Kentucky, Lexington, KY, U.S.A.; (3) Markey Cancer Center, University of Kentucky, Lexington, KY, U.S.A.; (4) College of Agriculture, Food and Environment, University of Kentucky, Lexington, KY, U.S.A.
    The Center for Tobacco Reference Products (CTRP) has provided tobacco reference products for research since 1968. In 2016, CTRP was awarded the first of three cooperative agreements with the U.S. Food and Drug Administration (FDA) to produce...
  9. CORESTA Meeting, Smoke Science/Product Technology, 2023, Cancun, STPOST 21 (also presented at TSRC 2023)

    Aromatic amines in the mainstream smoke of commercial cigars

    JI Huihua(1); JIN Zhenyu(1); FENTON L.(1); SLONE S.(2)
    (1) Kentucky Tobacco Research and Development Center, University of Kentucky, Lexington, KY, U.S.A.; (2) Dr. Bing Zhang Department of Statistics, University of Kentucky, Lexington, KY, U.S.A.
    Aromatic amines are a class of carcinogenic compounds in tobacco smoke that are listed on the FDA list of harmful and potentially harmful constituents (HPHCs) in tobacco products and tobacco smoke. Six aromatic amines yields (1-aminonaphthalene...
  10. TSRC, Tob. Sci. Res. Conf., 2023, 76, abstr. 110 (also presented at CORESTA SSPT2023)

    Potential ultra-low nicotine limit in tobacco – can we meet it?

    FISHER A.M.(1); FISHER C.R.(1); PATRA B.(1); JI Huihua(1); KINNEY J.(1); YANG Shengming(2); SLONE S.(1)
    (1) University of Kentucky, Lexington, KY, USA; (2) US Department of Agriculture, Fargo, ND, USA
    The FDA has sought comments on a possible nicotine limit of 0.3-0.5 mg/g in the filler of cigarettes. Over the years, we have tested the conventional low alkaloid (LA) nic1nic2 mutants, agronomic practices known to lower alkaloids, and a combination...