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7 results

  1. 48th TWC, Tob. Work. Conf., 2018, abstr. 31

    Reproduction of the root-knot nematode Meloidogyne arenaria on tobacco homo- or heterozygous for root-knot nematode resistance genes RK1 and/or RK2

    ADAMO N.; JOHNSON C.S.; EISENBACK J.D.
    Virginia Tech, Blackstone VA USA
      Reference only. Abstract submission was on a voluntary basis. 2018-1-2033 ADAMO N. JOHNSON C.S. EISENBACK J.D. English Virginia Tech 48th TWC, Tob. Work. Conf., 2018, abstr. 31 Tobacco Workers Conference (TWC) USA ADAMO N.; JOHNSON C.S.; EISENBACK J.D. ...
  2. 46th TWC, Tob. Work. Conf., 2014, abstr. 79

    Reproduction of Meloidogyne arenaria on flue-cured tobacco homozygous for Rk1 and/or Rk2

    POLLOK J.R.; JOHNSON C.S.; EISENBACK J.D.; REED T.D.
    Virginia Tech So. Piedmont AREC, 2375 Darvills Road,
Blackstone, VA 23824, USA
    Three species of root-knot nematodes (Meloidogyne incognita, M. arenaria, and M. javanica) have long been a problem in tobacco production around the world. Meloidogyne incognita has historically been the most economically significant root-knot nematode ...
  3. 46th TWC, Tob. Work. Conf., 2014, abstr. 89

    A new method to characterize early parasitism of tomato and tobacco by Meloidogyne arenaria

    POLLOK J.R.; JOHNSON C.S.; EISENBACK J.D.; REED T.D.
    Virginia Tech So. Piedmont AREC, 2375 Darvills Road,
Blackstone, VA 23824, USA
    Root-knot nematodes have been a problem in Virginia tobacco for many years. A few currently available tobacco cultivars are susceptible to attack by all root-knot nematode species, the vast majority are homozygous for Rk1 alone, and an increasing number ...
  4. CORESTA Congress, Quebec, 2014, Agronomy/Phytopathology Groups, AP 05

    Reproduction of M. arenaria on flue-cured tobacco homozygous for Rk1 and/or Rk2 resistance genes, and possible effects of soil temperature on resistance

    POLLOK J.R.(1,2); JOHNSON C.S.(1,2); EISENBACK J.D.(2); REED T.D.(1)
    (1) Virginia Tech, Southern Piedmont Agriculture Research and Extension Center, Blackstone, VA, U.S.A.; (2) Virginia Tech Dept. Plant Pathology, Physiology, & Weed Science, Blacksburg, VA, U.S.A.
    Meloidogyne incognita has historically been the most significant root-knot nematode species on tobacco (Nicotiana tabacum L.) in Virginia. However, most commercial cultivars now possess the Rk1 resistance gene to races 1 and 3 of M. incognita, and M. ...
  5. 45th TWC, Tob. Work. Conf., 2012, abstr. 89

    Effect of resistant tobacco on population dynamics of root-knot nematode species in Virginia

    EISENBACK J.D.; JOHNSON C.S.
    Dept. Plant Pathology, Physiology & Weed Science, Virginia Tech, Blacksburg, VA 24061 USA
    Nematode soil samples were collected from twelve flue-cured tobacco-producing counties in Virginia in the fall of 2010. A total of 276 samples were collected from fields with yields that were considered to be less than optimal. In assays for vermiform and ...