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Crop models need accurate simulation of leaf canopy development. Thermal interval for leaf tip appearance (phyllochron) is critical for predicting duration of vegetative development. Phyllochron in maize is shorter in temperate than in tropical and subtropical environments. As existing data has been evaluated in a narrow range of environments, underlying mechanisms that affect phyllochron have not...
Prediction of the initiation, appearance and emergence of leaves is critically important to the success of simulation models of crop canopy development and some aspects of crop ontogeny. Data on leaf number and crop ontogeny were collected on five cultivars of maize differing widely in maturity and genetic background grown under natural and extended photoperiods, and planted on seven sowing dates...
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