30
views
0
recommends
+1 Recommend
0 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      Screening and Histopathological Characterization of Korean Carrot Lines for Resistance to the Root-Knot Nematode Meloidogyne incognita

      Read this article at

      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          In total, 170 carrot lines developed in Korea were screened for resistance to Meloidogyne incognita race 1 to select parental genetic resources useful for the development of nematode-resistant carrot cultivars. Using the gall index (GI), gall formation was examined on carrot roots inoculated with approximately 1,000 second-stage juveniles of the nematode 7 weeks after inoculation. Sixty-one carrot lines were resistant (GI ≤ 1.0), while the other 109 were susceptible (GI > 1.0) with coefficient of variance (CV) of GI for total carrot lines 0.68, indicating low-variation of GI within the lines examined. The histopathological responses of two carrot plants from resistant and susceptible lines were examined after nematode infection. In susceptible carrots, giant cells formed with no discernible necrosis around the infecting nematodes. In the resistant carrot line, however, no giant cells formed, although modified cells were observed with extensive formation of necrotic layers through their middle lamella and around the infecting nematodes. This suggested that these structural modifications were related to hypersensitive responses governed by the expression of true resistance genes. Therefore, the Korean carrot lines resistant to the nematode infection are potential genetic resources for the development of quality carrot cultivars resistant to M. incognita race 1.

          Related collections

          Most cited references 65

          • Record: found
          • Abstract: not found
          • Article: not found

          Plant Pathology

            Bookmark
            • Record: found
            • Abstract: not found
            • Article: not found

            A low-viscosity epoxy resin embedding medium for electron microscopy.

             A R Spurr (1968)
              Bookmark
              • Record: found
              • Abstract: not found
              • Article: not found

              SELECTION PRESSURES AND PLANT PATHOGENS

               K. Leonard (1977)
                Bookmark

                Author and article information

                Journal
                Plant Pathol J
                Plant Pathol. J
                PPJ
                The Plant Pathology Journal
                Korean Society of Plant Pathology
                1598-2254
                2093-9280
                March 2014
                : 30
                : 1
                : 75-81
                Affiliations
                [1 ]Deaprtment of Agricultural Biotechnology and Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul 151-921, Korea
                [2 ]KC Carrot Breeding Institute Co., Ltd., Daegu 706-850, Korea
                Author notes
                [* ]Corresponding author. Phone) +82-2-880-4675, FAX) +82-2-873-2317, E-mail) yhokim@ 123456snu.ac.kr
                Article
                ppj-30-75
                10.5423/PPJ.OA.08.2013.0082
                4174838
                © The Korean Society of Plant Pathology

                This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

                Categories
                Research Article

                Comments

                Comment on this article