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Fig. 2. Biplot of interaction principal component axis 1 against mean yield of five lines (ICPL 4, ICPL 84023, ICPL 85010, ICPL 85012, ICPL 88015) developed at Patancheru and three (MN 1, MN 5 and MN 8) developed in Minnesota, USA, in two natural day environments, ND95, ND96 (in 1995 and 1996) and two extended day environments, ED95 and ED96 (in 1995 and 1996). The dashed line separates negative and positive scores. Each environment is shown by a separate symbol.
