Saccharum spontaneum , a Novel Source of Resistance to Root-Lesion and Root-Knot Nematodes in Sugarcane.

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  • Additional Information
    • Source:
      Publisher: American Phytopathological Society Country of Publication: United States NLM ID: 9882809 Publication Model: Print-Electronic Cited Medium: Print ISSN: 0191-2917 (Print) Linking ISSN: 01912917 NLM ISO Abbreviation: Plant Dis Subsets: MEDLINE
    • Publication Information:
      Original Publication: St. Paul, Minn. : American Phytopathological Society, [1980]-
    • Subject Terms:
      Disease Resistance* ; Saccharum*/classification ; Saccharum*/parasitology ; Tylenchoidea*/physiology; Animals ; Australia
    • Abstract:
      Root-lesion nematode ( Pratylenchus zeae ) and root-knot nematode ( Meloidogyne javanica ) are two important pathogens of sugarcane ( Saccharum hybrid). No commercial cultivars are resistant to these nematodes in Australia. Twenty accession lines of S. spontaneum , a wild relative of sugarcane, were tested against these two nematode species. S. spontaneum lines were tested twice for resistance to root-lesion nematode and three times for root-knot nematode. Reproduction (final population/starting population) of root-lesion nematodes was significantly lower in 17 of the 20 S. spontaneum accession lines tested in two experiments compared with two commercial cultivars. Four S. spontaneum lines supported a significantly lower number of root-lesion nematodes per gram of root than that of two commercial sugarcane cultivars. Reproduction of root-knot nematodes was significantly lower in 16 S. spontaneum lines compared with two commercial cultivars. Fourteen of the S. spontaneum lines tested supported significantly fewer eggs per gram of root compared with two commercial cultivars. This study showed that S. spontaneum lines possessed resistance for root-lesion and root-knot nematodes. Targeted crossing with commercial hybrid parental lines should be conducted to introduce nematode resistance into sugarcane cultivars for the Australian sugar industry.
    • Contributed Indexing:
      Keywords: ; field crops; nematode resistance
    • Publication Date:
      Date Created: 20190710 Date Completed: 20190924 Latest Revision: 20190925
    • Publication Date:
      20240829
    • Accession Number:
      10.1094/PDIS-02-19-0385-RE
    • Accession Number:
      31287776