Expression of FT genes in field-grown gentian plants throughout all stages of dormancy and growth. A, Seasonal expression of GtFT1 and GtFT2 in leaves (filled circles) and SAM (open circles) in G. triflora cv. SpB. The inset shows an amplified plot of the expression from January to April. B, Expression of FT2 genes in OWBs of G. triflora cv. Iwate (GtFT2; left) and G. scabra cv. Alta (GsFT2; right). The ecodormancy period is represented by a shaded area. The relative expression level of each gene is normalized to that of Actin, with expression in leaves in October defined as 1. Each value represents the means ± sd calculated from five independent biological replicates. Five biological replicates were prepared each being a single tissue (SAM or leaf) from a plant.