Meloidogyne partityla on Pecan Isozyme Phenotypes and Other Host
Abstract
Meloidogyne sp. from five pecan (Carya illinoensis) orchards in Texas were distinctive in host range and iszoyme profiles from common species of Meloidogyne but were morphologically congruent with Meloidogyne partityla Kleynhans, a species previously known only in South Africa. In addition to pecan, species of walnut (Juglans hindsii and J. regia) and hickory (C. ovata) also were hosts. No reproduction was observed on 15 other plant species from nine families, including several common hosts of other Meloidogyne spp. Three esterase phenotypes and two malate dehydrogenase phenotypes of M. partityla were identified by polyacrylamide gel electrophoresis. Each of these isozyme phenotypes was distinct from those of the more common species M. arenaria, M. hapla, M. incognita, and M. javanica. Key words: Carya illinoensis, C. ovata, detection, esterase, hickory, isozyme phenotype, Juglans hindsii, J. regia, malate dehydrogenase, Meloidogyne partityla, pecan, root-knot nematode, walnut.Downloads
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