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Host Suitability of the Olive Cultivars Arbequina and Picual for Plant-Parasitic Nematodes

AuthorsCastillo, Pablo ; Nico, Andrés I.; Jiménez-Díaz, Rafael M.
Ring nematodes
Root-lesion nematodes
Spiral nematodes
Zygotylenchus guevarai
Issue Date2003
PublisherSociety of Nematologists
CitationJournal of Nematology vol.35 no.1 (March 2003) p.29-34
AbstractHost suitability of olive cultivars Arbequina and Picual to several plant-parasitic nematodes was studied under controlled conditions. Arbequina and Picual were not suitable hosts for the root-lesion nematodes Pratylenchus fallax, P. thornei, and Zygotylenchus guevarai. However, the ring nematode Mesocriconema xenoplax and the spiral nematodes Helicotylenchus digonicus and H. pseudorobustus reproduced on both olive cultivars. The potential of Meloidogyne arenaria race 2, M. incognita race 1, and M. javanica, as well as P. vulnus and P. penetrans to damage olive cultivars, was also assessed. Picual planting stocks infected by root-knot nematodes showed a distinct yellowing affecting the uppermost leaves, followed by a partial defoliation. Symptoms were more severe on M. arenaria and M. javanica-infected plants than on M. incognita-infected plants. Inoculation of plants with 15,000 eggs + second-stage juveniles/pot of these Meloidogyne spp. suppressed the main height of shoot and number of nodes of Arbequina, but not Picual. Infection by each of the two lesion nematodes (5,000 nematodes/pot) or by each of the three Meloidogyne spp. suppressed (P 0.05) the main stem diameter of both cultivars. On Arbequina, the reproduction rate of Meloidogyne spp. was higher (P 0.05) than that of Pratylenchus spp.; on Picual, Pratylenchus spp. reproduction was higher (P 0.05) than that of Meloidogyne spp.
Publisher version (URL)http://fulltext10.fcla.edu/DLData/SN/SN0022300X/0035_001/29.pdf
Appears in Collections:(IAS) Artículos
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