Figure 2.

Adaptive value of floral plasticity in Moricandia arvensis. Magnitude and direction of the selection differentials acting on each plant trait during each season (vectors in arrow) and on their reaction norms (spring vectors). The reaction norms are represented as lines joining the phenotypic value in spring and summer. The spring vectors indicates selection acting directly on plasticity, increasing it (raising the slope) or decreasing it (flattening the slope). The length of the vectors indicates the magnitude of the selection, and the color, their statistical significance (gray = nonsignificant, red = significant). The asterisks above each reaction norm indicate significant between-season differences in the magnitude of selection. The color codes in reaction norms are: Blue indicates adaptive plasticity, orange indicates maladaptive plasticity, black indicates adaptatively neutral plasticity, and gray indicates nonsignificant plasticity.