Model Parameterization: The Timing of Flowering in Soybean Accessions

Abstract

We developed regression and simulation models capable of forecasting the timing of flowering in nine early maturing soybean accessions. The genotype–environment interactions accounted for 6.3 and 15.9% of the variability of the planting–emergence and emergence–flowering periods, respectively. A simulation model for the development of phenophases under low temperature conditions showed the differences in the response of the soybean yield to temperature change. The approximation error was less than 10%, which is acceptable, indicating that the model is valid and can be used for crop yield forecasting.