Root-knot nematodes (Meloidogyne spp.) are a significant problem in potato (Solanum tuberosum) production. There is no potato cultivar with Meloidogyne resistance, even though resistance genes have been identified in wild potato species and were introgressed into breeding lines. The objectives of this study were to generate stable transgenic potato lines in a cv. Russet Burbank background that ...

1. Golden, A. M., J. H. O'Bannon, G. S. Santo, and A. M. Finley. I980. Description and SEM observations of Meloidogyne chitwoodi n. sp. (Meloidogynidae), a .root-knot nematode on potato in lhe Pacific Northwest J. Nemato]. 12:319-327. 2. Hussey, R. S., and K. R. Barker. 1973. A comparison of methods of collecting inocula of Meloidog3'ne spp., including a new technique. Plant Dis. Rep, 57:1025-1...

parison of methods of collecting inocula of Meloidogyne spp., including a new technique. Plant Disease Reporter 57:2025-1028. 6. Jenkins, W. R. 1964. A rapid centrifugal flotation technique for separating nematodes from soil. Plant Disease Reporter 48:62. 7. Rafael, N. A. 1968. Rotacion de cultivos para el control de nematodes fitoparasiticos en el Valle del Cauca. Proceedings of the Soil and C...

Olive (Olea europaea) is a crop of great agronomic, economic and cultural interest for the Mediterranean Basin, although increase in world demand olive oil expanding its cultivation by other countries southern hemisphere. The main pathogens include bacteria (Pseudomonas savastanoi pv. savastanoi, Xylella fastidiosa), fungi (Colletotrichum spp., Verticillium dahliae, Fusarium spp. Rhizoctonia so...

Certain nematicidal treatments for the control of root knot of tobacco in six field experiments in North Carolina were used to determine early, midseason, and postharvest densities of eggs and larvae of Meloidogyne spp., postharvest root-knot indices, and crop yield and value. Various statistical correlations showed that population densities determined 6-8 wk after transplanting were more indic...

Phylogeny of Meloidogyne spp. based on 18S rDNA and the intergenic region of mitochondrial DNA sequences Myrian S. TIGANO 1,∗, Regina M.D.G. CARNEIRO 1, Ayyamperumal JEYAPRAKASH 2, Don W. DICKSON 2 and Byron J. ADAMS 3 1 Embrapa Recursos Genéticos e Biotecnologia, C.P. 02372, 70849-970, Brasilia, DF, Brazil 2 Entomology and Nematology Department, University of Florida, Gainesville, FL 32611-062...

The response of Citrus spp. and related rootstocks to a population of Meloidogyne javanica was evaluated in a screenhouse experiment. Palestine and Rangpur lime, rough lemon, sour orange, Sexton and Thentriton tangelo, and Volkamer lemon were not infected by M. javanica. Galls and tip swellings were observed on the roots of Poncirus triloliata and Troyer citrange. There was no evidence of nemat...