DeVay, J.E., A.P. Guiterrez, G.S. Pullman, R.J. Wakeman, R.H. Garber, D.P. Jeffers, S.N. Smith, P.B. Goodell and P.A. Roberts. 1997.
Inoculum densities of Fusarium oxysporum f. sp. vasinfectum and Meloidogyne incognita in relation to the development of Fusarium wilt and the phenology of cotton plants (Gossypium hirsutum). Phytopathology 87:341-346.

Keen, N.T. and P.A. Roberts. 1998.
Plant parasitic nematodes: digesting a page from the microbe book. Proc. Natl. Acad. Sci. USA 95:4789-4790.

Ogallo, J.L., P.B. Goodell, J. Eckert and P.A. Roberts. 1999.
Management of root-knot nematodes with resistant cotton cv. NemX. Crop Science 39:418-421.

Veremis, J.C., A.W. van Heusden and P.A. Roberts. 1999.
Mapping a novel heat-stable resistance to Meloidogyne in Lycopersicon peruvianum. Theor. Appl. Genet. 98:274-280.

Ehlers, J. D., W.C. Matthews, A. E. Hall, and P.A. Roberts. 2000.
Inheritance of a broad-based form of root-knot nematode resistance in cowpea. Crop Science. 40:611-618.

Ehlers, J. D., A. E. Hall, P. N. Patel, P.A. Roberts, and W.C. Matthews. 2000. Registration of ‘California Blackeye 27’ cowpea. Crop Science 40:854-855.

Boiteux, L. S., J. G. Belter, P. A. Roberts, and P. W. Simon. 2000.
RAPD linkage map of the genomic region encompassing the root-knot nematode (Meloidogyne javanica) resistance locus in carrot. Theor. Appl. Genet 100:439-446.

Ouédraogo, J.T., B.S. Gowda, M. Jean, T.J. Close, J.D. Ehlers, A.E. Hall, A.G. Gillaspie, P.A. Roberts, A.M. Ismail, G. Bruening, P. Gepts, M.P. Timko, and F.J. Belzile, 2002.
An improved genetic linkage map for cowpea (Vigna unguiculata L.) combining AFLP, RFLP, RAPD, biochemical markers and biological resistance traits. Genome 45, 175-188.

Roberts, P.A. and T. Mullens. 2002.
Diseases caused by Nematodes. Pp 45-50 In: Compendium of Umbelliferous Crop Diseases. R. M. Davis and R. N. Raid (eds.). American Phytopathological Society. APS Press, St. Paul, MN.

Roberts, P.A. 2002.
Concepts and Consequences of Resistance. Pp. 23-41 In: Plant Resistance to Parasitic Nematodes. J.L. Starr, R. Cook, J. Bridge (eds.). CABI Publishing, Wallingford, UK.

Ehlers, J. D., W.C. Matthews, A. E. Hall, and P.A. Roberts. 2002.
Breeding and evaluation of cowpeas with high levels of broad-based resistance to root-knot nematodes. Pp. 41-51 In: Advances in Cowpea Research. Vol II. C. A. Fatokun et al. (eds.). International Institute Tropical Agriculture, Ibadan, Nigeria.

Ammiraju, J. S. S., J. C. Veremis, X. Huang, P. A. Roberts and I. Kaloshian. 2003.
The heat-stable root-knot nematode resistance gene Mi-9 from Lycopersicon peruvianum is localized on the short arm of chromosome 6. Theor. Appl. Genet. 106:478-484.

Boiteux, L.S., I. C. Bach, M.E.N. Fonseca, A. W. Moita, W.C. Matthews, P.A. Roberts, and P.W. Simon. 2003.
Evidence for a dosage-dependent response of the Meloidogyne javanica resistance locus in carrot via linkage analysis with codominant flanking markers. Euphytica. (in press).

Chen, P. and P. A. Roberts. 2003.
Virulence in Meloidogyne hapla differentiated by resistance in common bean (Phaseolus vulgaris). Nematology (in press)

Hall, A. E., N. Cisse, S. Thiaw, H. O. A. Elawad, J. D. Ehlers, A. M. Ismail, R. L. Fery, P. A. Roberts, L. W. Kitch, L. L. Murdock, O. Boukar, R. D. Phillips and K. H. McWatters. 2003.
Development of Cowpea Cultivars and Germplasm. Field Crops Res. (in press).

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