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  1. CORESTA Meeting, Agronomy/Phytopathology, 2019, Victoria Falls, AP 33

    Cigar wrapper production in Zimbabwe: an overview of past, present and future prospects

    MUKOYI F.(1); MAGAMA F.(1); EDMONDSON A.(2); GUILD L.(3); GARWE D.(1)
    (1) Tobacco Research Board, Harare, Zimbabwe; (2) Von Eicken, Lübeck, Germany; (3) Mapeto Farm, Burma Valley, Zimbabwe
    The cigar wrapper tobacco type was once grown in Zimbabwe in the early 1950s in a project that was championed by British American Tobacco (BAT). However, production was stifled owing to viability challenges coupled with loss of interest from growers. ...
  2. CORESTA Meeting, Agronomy/Phytopathology, 2019, Victoria Falls, AP 34

    Alkaloid content of wide tobacco germplasm: the search for high and low nicotine content accumulating genotypes

    MAGAMA F.; SHAMUDZARIRA M.; GARWE D.
    Tobacco Research Board, Harare, Zimbabwe
    Tobacco alkaloids are essential for the flavour, addictiveness, carcinogenicity and utilisation of blended flue-cured tobacco. Although there are strict limits on nicotine and nornicotine content permitted, there is renewed impetus to determine the ...
  3. CORESTA Meeting, Agronomy/Phytopathology, 2019, Victoria Falls, AP 35

    Genetic mapping and characterization of the pale yellow (Py) locus responsible for accelerated senescence in dark tobacco

    PRAMOD S.; ADAMS A.; DAVIS G.; LUSSO M.; FREDERICK J.; XU D.
    Altria Client Services LLC, Product Design & Maintenance, Richmond, VA, U.S.A.
    In commercial dark tobacco varieties (Nicotiana tabacum L.), accelerated senescence trait not only helps reduce TSNAs that are otherwise accumulated during the yellowing process associated with traditional dark varieties but also, could benefit growers in ...
  4. CORESTA Meeting, Agronomy/Phytopathology, 2019, Victoria Falls, AP 36

    Mutations of phytochelatin synthase (PCS) genes by CRISPR/Cas9 reduce accumulation of cadmium in tobacco leaves

    SEO H.S.; LEE Y.G.; KIM K.C.; OH K.H.; JEON E.Y.; NA W.H.; LEE J.H.
    KT&G Research Institute, Daejeon, South Korea
    Cadmium (Cd) is classified as a Class 1 “known human carcinogen” by the International Agency for Research on Cancer (IARC). Cd accumulation in crop plants including tobacco (Nicotiana tabacum) can lead to human exposure. Cd is a non-essential heavy metal ...
  5. CORESTA Meeting, Agronomy/Phytopathology, 2019, Victoria Falls, AP 37

    Metabolic and transcriptomic shifts during tobacco leaf post-harvest senescence

    BOVET L.; HILFIKER A.; BATTEY J.; SIERRO N.; GOEPFERT S.
    PMI R&D, Philip Morris Products S.A., Neuchâtel, Switzerland
    Tobacco is harvested after plant flowering, when the leaf senescence is more or less visible depending on cultivars. Before the drying phase, current practices allow the senescence to proceed until the detached leaf becomes yellow. This yellowing phase is ...
  6. CORESTA Meeting, Agronomy/Phytopathology, 2019, Victoria Falls, AP 38

    Metabolic profiling of mutant tobaccos with distinctive aroma based on gas chromatography-mass spectrometry and multivariate analysis

    CAO Jianmin; XU Xiaoling; LIU Guanshan; CAO Pengyun; LIN Yingnan
    Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, P.R. China; Graduate School of CAAS, Beijing 100081, P.R. China
    A large number of mutant materials were obtained by chemical mutagenesis of tobacco with ethyl methylsulfonate (EMS) and new materials with distinctive aroma characteristics were achieved by field screening, identification and sensory evaluation. To ...
  7. CORESTA Meeting, Agronomy/Phytopathology, 2019, Victoria Falls, AP 39

    First report of a pepper potato virus Y isolate affecting tobacco in Zimbabwe

    ZVOBGO G.; MUFUNDA F.; CHINHEYA C.C.; MAGAMA F.; GARWE D.; DIMBI S.
    Tobacco Research Board, Kutsaga, Harare, Zimbabwe
    Potato virus Y (PVY) is an economically important disease, capable of causing 100 % yield losses particularly in late planted tobacco. This is so because the early growth stages coincide with a peak in aphid vector populations. In December 2017, severe ...
  8. CORESTA Meeting, Agronomy/Phytopathology, 2019, Victoria Falls, AP 40

    Progress in breeding and biocontrol dual approaches for tobacco broomrape management

    MALPICA A.(1); GUINCHARD L.(2); BACHET S.(1); VACHER C.(3); GATARD L.(4); REIBEL C.(2); GAUTHERON N.(2); EDELHERMANN V.(2); STEINBERG C.(2); GIBOT LECLERC S.(2)
    (1) Bergerac Seed & Breeding, Bergerac, France; (2) Agroécologie (AgroSup Dijon, INRA, Univ. Bourgogne Franche-Comté), Dijon, France; (3) Arvalis, Institut du Vegetal, Bergerac, France; (4) Coopérative CT2F, Maison de l’Agriculture, Schiltigheim, France
    Tobacco broomrape (Phelipanche ramosa, Phelipanche aegyptiaca and Orobanche Cernua) is a widespread parasitic plant from the Orobanchaceae family, that causes important damage in tobacco crops. Broomrape is mainly present in Europe, Middle East and Asia ...
  9. CORESTA Meeting, Agronomy/Phytopathology, 2019, Victoria Falls, AP 41

    Evaluation of the bio-efficacy of the biological control agents, Trichoderma, Paecilomyces, Mycorrhiza and Bacillus species against root-knot nematodes

    MAHERE T.S.; CHINHEYA C.C.; DIMBI S.
    Tobacco Research Board, Kutsaga, Harare, Zimbabwe
    The recent phasing-out of fumigant nematicides, coupled with limited land for long-term rotations in Zimbabwe, brought to the fore the need for new technologies for the management of root-knot nematodes (RKNs) in Zimbabwe. The use of biological control ...
  10. CORESTA Meeting, Agronomy/Phytopathology, 2019, Victoria Falls, AP 42

    Study of the control effect of preceding crops on tobacco black shank

    GAI Xiaotong; XIA Zhenyuan; LU Canhua; HUANG Changjun; YUAN Cheng; FANG Dunhuang
    Yunnan Academy of Tobacco Agricultural Sciences of CNTC, Kunming City, Yunnan Province, P.R. China
    The aim of this study was to investigate the control effect of preceding crops on tobacco black shank and the effect on diversity of soil microorganism. Ten crops, e.g. rape, wheat, barley, broad bean, pea, garlic and ryegrass, were selected as preceding ...