Fertile Solanum tuberosum + S. commersonii somatic hybrids as sources of resistance to bacterial wilt caused by Ralstonia solanacearum by Laferriere, L.T, Helgeson, J.P, Allen, C

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Resistance to potato virus Y in somatic hybrids between Solanum etuberosum and S. tuberosum x S. berthaultii hybrid by Novy, R G, Helgeson, J P

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Fertility of somatic hybrids from protoplast fusions of Solanum brevidens and S. tuberosum by Ehlenfeldt, M.K, Helgeson, J.P

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An extracellular protein from Phytophthora parasitica var nicotianae is associated with stress metabolite accumulation in tobacco callus by Farmer, E.E, Helgeson, J.P

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Gene RB Cloned from Solanum bulbocastanum Confers Broad Spectrum Resistance to Potato Late Blight by Song, Junqi, Bradeen, James M., Naess, S. Kristine, Raasch, John A., Wielgus, Susan M., Haberlach, Geraldine T., Liu, Jia, Kuang, Hanhui, Austin-Phillips, Sandra, Buell, C. Robin, Helgeson, John P., Jiang, Jiming

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Postharvest resistance through breeding and biotechnology by Helgeson, J.P. (ARS, USDA, University of Wisconsin, Madison)

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Group additivity equations of state for calculating the standard molal thermodynamic properties of aqueous organic species at elevated temperatures and pressures by Amend, Jan P., Helgeson, Harold C.

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Resistance to late blight in Solanum bulbocastanum is mapped to chromosome 8 by NAESS, S. K, BRADEEN, J. M, WIELGUS, S. M, HABERLACH, G. T, MCGRATH, J. M, HELGESON, J. P

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Transfer of tuber soft rot and early blight resistances from Solanum brevidens into cultivated potato by Tek, A.L, Stevenson, W.R, Helgeson, J.P, Jiang, J

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Interaction of a hydroxyproline-rich glycoprotein from tobacco callus with potential pathogens [Nicotiana tabacum] by Jay E. Mellon, Helgeson, John P.

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Somatic hybrids between Solanum bulbocastanum and potato: a new source of resistance to late blight by Helgeson, J.P, Pohlman, J.D, Austin, S, Haberlach, G.T, Wielgus, S.M, Ronis, D, Zambolim, L, Tooley, P, McGrath, J.M, James, R.V

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Fertile interspecific somatic hybrids of Solanum: a novel source of resistance to Erwinia soft rot by Austin, S, Lojkowska, E, Ehlenfeldt, M.K, Kelman, A, Helgeson, J.P

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DNA analysis of potato plus Solanum brevidens somatic hybrid lines by Polgar, Z. (Pannon Univ. of Agricultural Sciences, Keszthely (Hungary). Georgikon Faculty, Dept. for Potato Research), Wielgus, S.M, Horvath, S, Helgeson, J.P

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A method for large scale laboratory inoculation of potato tubers with late blight fungus by Zalewski, J. C., Helgeson, J. P., Kelman, A.

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Relative stabilities of biomolecules at high temperatures and pressures by Helgeson, Harold C., Amend, Jan P.

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Analysis of the introgression of Solanum bulbocastanum DNA into potato breeding lines by Naess, S K, Bradeen, J M, Wielgus, S M, Haberlach, G T, McGrath, J M, Helgeson, J P

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Somatic hybrids produced by protoplast fusion between Solanum tuberosum and Solanum brevidens: phenotypic variation under field conditions by Austin, S, Ehlenfeldt, M.K, Baer, M.A, Helgeson, J.P

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A dominant gene conferring disease resistance to tobacco plants is expressed in tissue cultures [Phytophthora parasitica nicotianae, black shank, fungus diseases] by Helgeson, J. P.

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Segregation and recombination of Solanum brevidens synteny groups in progeny of somatic hybrids with S. tuberosum: intragenomic equals or exceeds intergenomic recombination by McGrath, J. M, Wielgus, S. M, Helgeson, J. P

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RFLP analysis of chromosomal segregation in progeny from an interspecific hexaploid somatic hybrid between Solanum brevidens and Solanum tuberosum by Williams, C.E, Wielgus, S.M, Haberlach, G.T, Guenther, C, Kim-Lee, H, Helgeson, J.P

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