Search Results

15 results

  1. 48th TWC, Tob. Work. Conf., 2018, abstr. 53

    Quantitative real-time PCR analysis of individual flue-cured tobacco seeds reveals novel insights into seedborne transmission of Tobacco Mosaic Virus

    ELLIS B.W.(1); WILKINSON C.A.(1); BROWN J.A.(1); ELLIS M.D.(1); SIT T.L.(2)
    (1) Virginia Tech, Blackstone VA USA; (2) North Carolina State University, Raleigh NC USA
    The purpose of this study is to investigate seed-borne transmission of Tobacco mosaic virus (TMV) by examining the infestation route of tobacco seeds. Four different crosses were performed using K326 flue-cured variety: 1) self-fertilized, TMV...
  2. 45th TWC, Tob. Work. Conf., 2012, abstr. 94

    Determination of total alkaloids, reducing sugars, and total nitrogen by near infrared reflectance spectroscopy

    RIVERS D.D.; WILKINSON C.A.; TILSON W.M.; TEUTSCH C.D.
    Virginia Tech Southern Piedmont Agricultural Research and Extension Center, 2375 Darvills Rd, Blackstone, VA 23824 USA
    Near infrared reflectance spectroscopy (NIRS) is a nondestructive method for chemical analysis which is rapid, inexpensive, and reduces the toxic impact on the environment. Calibration equations to estimate reducing sugars (RS), total alkaloids (TA)...
  3. Tob. Sci., 1995, 39-20, p. 121-124, ISSN. 0082-4523

    Diallel analysis of eight tobacco accessions for resistance to tobacco cyst nematode

    HAYES A.J.; WILKINSON C.A.; JOHNSON C.S.
    Southern Piedmont Agricultural Research and Extension Center, Virginia Polytechnic Institute and State University, Blackstone, VA, USA
    Understanding the genetics of resistance to the tobacco cyst nematode [Globodera tabacum solanacearum (Miller and Gray, 1972) Behrens, 1975] is an important step in selecting lines for use as parents in developing an agronomically desirable tobacco...
  4. Tob. Sci., 1994, 38-06, p. 21-24, ISSN. 0082-4523, Tob. Reporter, 1994, 121-3, p. 53-6

    Diallel analysis of crosses among Virginia fire-cured tobacco cultivars

    WILKINSON C.A.; JONES J.L.; TILSON W.M.
    Southern Piedmont Agricultural Experiment Station, Virginia Polytechnic Institute and State University, Blackstone, VA, USA
    An eleven-parent half diallel study of Virginia fire-cured tobacco cultivars was conducted to obtain estimates of combining ability and heterosis for several agronomic traits in a genetically diverse population. The experiment was grown in a...
  5. Tob. Sci., 1993, 37-01, p. 1-3, ISSN. 0082-4523

    Optimum farm test sites for flue-cured tobacco

    BOWMAN D.T.; WILKINSON C.A.; MOORE J.M.; STEPHENSON M.G.; CURRIN R.E., III
    North Carolina State University, Raleigh, NC, USA; Southern Piedmont Agricultural Expt. Stn., VPI & State University, Blackstone, VA, USA; Agronomy Dept. and USDA-ARS, Coastal Plain Exp. Stn., Tifton, GA, USA; Clemson Pee Dee Research and Educ. Center, Florence, SC, USA
    Flue-cured tobacco (Nicotiana tabacum L.) cultivars are evaluated by a Regional Minimum Standards Program before commercial release. The final phase of testing in this program involves large plots (0.125 ha) on 13 commercial farms in four states. The...
  6. Bull. Spec. CORESTA Congress, Jerez de la Frontera, 1992, p. 147, P7, ISSN.0525-6240

    Improving control of tobacco cyst nematodes on flue-cured tobacco in Virginia

    JOHNSON C.S.; WILKINSON C.A.
    Virginia Polytechnic Inst. and State University, Southern Piedmont Agric. Res. and Extension Center, Blackstone, VA, USA.
    Tobacco cyst nematodes (Globodera tabacum solanacearum or TCN) are economically important pests of flue-cured tobacco in Virginia and, since 1990, in North Carolina. Field research since 1984 has evaluated TCN control resulting from use of fumigant...