Impact of environmental stress on potato yield, M.E. Vayada; economic viability of true potato seed (TPS) over seed tuber, T. Walker; conservation of genetic resources, John Bamberg; ploidy manipulation - examination of gene action and method of gene mapping, G.C.C. Tai; propagation by traditional breeding methods, G.R. Mackay; breeding potential and combining activity in 4x-2x crosses, R. Ortiz and K. Watanabe; application of monohaploids in improvement, M.S. Ramanna; improvement at diploid species z-level, Kathleen Haynes; molecular markers in identification of genotypic variation, K. Watanabe; cell and tissue culture, R.E. Veilleux; ecology and development under limited growth conditions, A.J. Haverkort; manipulation of starch and sugar contents in tuber, T. Solomos; transformation for insect resistance, D. Douches; resistance to viruses, R. Thieme; resistance to nematodes, C.R. Brown; resistance to bacterial pathogens, E. Zimnoch-guzowska; resistance to late blight and other fungi, R. Jones; strategies for cloning economically important genes in potato, Walter de Jong.