Fig. 2. Relationship between kernel number per apical ear or per plant and cumulative intercepted photosynthetically active radiation (CIPAR) during critical window bracketing silking. Data points are from Andrade et al. (1999) and for Pioneer 3902 from Tollenaar et al. (1992). Open symbols indicate kernel number in apical ear (KN₁) and closed symbols kernel number from both apical and secondary ears (KN₂). Continuous lines are for Andrade et al. (1999) data and broken lines for Tollenaar et al. (1992) data. Thin lines are for KN₁ and thick lines for both KN₁ and KN₂ (see the text for details).

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