The CIB1 activity promoting floral initiation is dependent on cryptochrome, ZTL, and LKP2, but independent from FKF1. (A, C, E, and G) Images of transgenic plants overexpressing CIB1 in the indicated genetic backgrounds and the respective parents. Plants were grown in LD photoperiods. (B, D, F, and H) The time to flowering, the number of rosette leaves at the time of flowering of the respective genotypes, and the SDs (n > 20) are shown.