Internal Validation
Model performance was best when including both genetic and temperature
variation, and DTB was overall better-predicted than SP (Table 1). For
both traits and by design, the G only model predicted a single
value for each genotype while the E only model predicted a single
value for each planting. Variation in daily minimum/maximum temperature
explained more multi-environmental trait variation than genetic
differences between individuals. This was particularly pronounced for
SP, where the G only model accuracy was very low
(r2 = 0.019). Accounting for GxE marginally
improved model fit for both traits.