Fig. 2. bri1 is a strong enhancer of FRI and of autonomous mutants. (A) Photographs at bolting of double mutants between the bri1-201 mutant and different flowering-time mutants: autonomous (ld-3, fca-11), photoperiod (gi-11), gibberellin (ga1-3), and dominant FRI in the Ws background. Each single mutant is also shown. Plants were grown under long days. (B) Flowering time under long days (16 hours light/8 hours darkness). (C) Flowering time of the bri1-201, ld-3 and gi-11 single mutants and the respective bri1 double mutants under short days (10 hours light/14 hours darkness). Representative experiments are presented. Flowering time was measured as in Fig. 1. Scale bar: 1 cm.