Fig. 2. SREG₂ and SREG_M+1 biplots for the 1996 Ontario winter wheat performance trial data. The numbers are different cultivars; the sites are CA = Centralia, EA = Elora, HN = Harriston, HW = Harrow, ID = Inwood, OA = Ottawa, RN = Ridgetown, WE = Woodslee, WK = Woodstock.