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Disease Note

First Report of a Species of Meloidoderita Parasitic on Grapes in New York. M. B. Harrison, Department of Plant Pathology, Cornell University, Ithaca, NY 14853. Plant Dis. 67:1290. Accepted for publication 26 July 1983. Copyright 1983 American Phytopathological Society. DOI: 10.1094/PD-67-1290.

An as yet undescribed nematode species of the genus Meloidoderita was found infecting roots of the grape cultivar Delaware in experimental plots at Fredonia, NY. In host range studies, this nematode did not develop in either Mentha (the host of M. kirjanovae) or Polygonum (the host of the Meloidoderita sp. found in Maryland). The nematode was parasitic on at least 15 grape cultivars, which included types of Vitis labrusca L., V. riparia Michx., and the French-American hybrids. The female developed in grape roots in a manner similar to that described for other Meloidoderita spp. The males developed in the soil and had a degenerate esophagus that lacked a stylet. Cystoid bodies containing viable eggs were produced. Diagnostic symptoms are not known.