Phenological response of spring wheat to timing of photoperiod perception: The effect of sowing depth on final leaf number in spring wheat

摘要

Wheat phenological modelling literature suggests final leaf number (FLN) targets of wheat (Triticum aestivum) will be set only once daylight is perceived and will be based upon environmental and cultivar-specific genetics at that time. Development is thought to proceed relative to thermal time regardless of light perception prior to emergence. Modelled predictions of final leaf number (FLN) and thence anthesis are based on this mechanism. Results did not support this hypothesis, and we suggest and alternative hypothesis based on molecular interactions between vernalization genes Vm1, Vrn2 and Vrn3. (C) 2016 Elsevier B.V. All rights reserved.