Fig. 1.

Leaf emergence speed in non-vernalized exe mutants and wild-type (WT) plants grown in a growth chamber. Arrows indicate timing of phase transition: black, WT; red, exe1; pink, exe2; blue, exe3; and green, exe4. (A) Days from germination to leaf unfolding at each leaf stage grown under long day (LD) conditions. The data at the 2-leaf stage are missing. The final leaf of each line indicates flag-leaf. (B) Days from germination to leaf unfolding at each leaf stage under short day (SD) conditions. The data at the 2-leaf stage are missing. The final leaf of each exe line indicates flag-leaf. WT did not head before the 20-leaf stage.