Fig. 1 The GGL biplot based on the 1992 Ontario winter wheat performance trial data. (A) Comparison of the genotypes at a given location, (B) comparison of the performance of a given genotype at different locations, (C) comparison of two genotypes at each and all locations, and (D) mega-environments and their winning cultivars. The full cultivar names are Ann = Annete, Aug = Augusta, Del = Delaware, Ena = Ena, Ham = Harmil, Har = Harus, Kar = Karena, Reb = Rebecca, Ron = AC Ron, and Zav = Zavitz. The full location names are BH = Bath, CA = Centralia, EA = Elora, GH = Guelph, HN = Harriston, HW = Harrow, ID = Inwood, KE = Kemptville, LN = London, MH = Morpeth, NN = Nairn, OA = Ottawa, RN = Ridgetown, WE = Woodslee, WK = Woodstock, WP = Winthrop
