Diel (24 h) leaf growth patterns were differently affected by temperature variations and the circadian clock in several plant species. In the monocotyledon Zea mays, leaf elongation rate closely followed changes in temperature. In the dicotyledons Nicotiana tabacum, Ricinus communis, and Flaveria
The possibility of altering CO(2) exchange of C(3)-C(4) species by growing them under various CO(2) and O(2) concentrations was examined. Growth under CO(2) concentrations of 100, 350, and 750 micromoles per mole had no significant effect on CO(2) exchange characteristics or leaf anatomy of Flaveria
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