Heat map showing the expression profiling of the TtALOG, TtMADS22, TtMADS47, and TtMADS55 genes at the early stages of inflorescence development in GAN-A631 (bh). The relative expression levels are shown in the heat map by a gradient of color: blue/white/red (low to high). Abbreviations: EDR, the early double ridge stage; LDR, the late double ridge stage; BMD, the branch meristem development stage; SMI, the spikelet meristem-initiated stage. The heat map color key gradient ranging from global minimum (blue) −1 to global maximum (red) +1 is shown on the right side. Asterisks indicate the TtMADS22, TtMADS47, and TtMADS55 of GAN-A631.