Quantitative resistance to late blight from Solanum berthaultii cosegregates with R Pi-ber : insights in stability through isolates and environment - Gilda Rauscher; Ivan Simko; Hilary Mayton; Merideth Bonierbale; Christine D. Smart; Niklaus J. Grünwald; Andrew Greenland; William E. Fry (Theoretical and Applied Genetics, 2010)