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Fig. 5. Kernel weight as a function of the amount of photosynthetic active radiation intercepted (IPAR) per kernel (A) and crop growth (CG) per kernel (B), during the effective grain-filling period. Data points represent the mean values of each treatment (plant population x row spacing x hybrid) in all experiments (Fig. 5A), and in E2, E3, and E4 (Fig. 5B). Symbols as in Fig. 3. The solid lines indicate the models fitted to the data set. The dashed line indicates the 1:1 relationship between variables.
