Fig. 3. Leaf carbon exchange rate (CER) and the reduction in leaf CER from silking to 5 wk after silking of maize hybrids ‘Pride 5’, ‘Pioneer 3902’, and ‘Cargill 1877’. Data shown are means of three replications of two plants at 1100 h on day following 16-h cold exposure in the dark and 1 h acclimation in the dark.

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