Flowering time of the recipient ft-1 plants in various grafts. (A and B) Flowering time of the recipient ft-1 stock plants with ft-1, wild-type (WT), 35S::FT, 35S::FT:EGFP; ft-1, and 35S::FT:EGFP scions. Flowering time is expressed as the total leaf number (the number of rosette and cauline leaves at the time of flowering) in (A), and the number of days to flowering (days from germination to the time when the primary inflorescence stem reaches a 1-cm height) in (B). Letters “a” and “b” above the bars designate p < 0.0001 and p > 0.1, respectively, for Student's t-test with ft-1. (C) Relationship between days to flowering and the total leaf number in ft-1 stock plants with 35S::FT, wild-type, ft-1, and 35S::FT:EGFP; ft-1 scions. The linear correlation coefficient (r) for the first three graft combinations is 0.83. (D) Flowering time of the recipient ft-1 scion plants grafted onto ft-1 and 35S::FT:EGFP; ft-1 stocks. (A–C) are based on the same data sets used for Figure 2 and S-Table 1 of Notaguchi et al.21