Transcript levels of floral regulators in the OsIDS1 OX. Transcript levels of OsIDS1 (A), SNB (B), OsTOE1 (C), Hd3a (D), RFT1 (E), Ehd1 (F), OsGI (G), Hd1 (H), OsMADS51 (I), and OsCO3 (J) in WT (closed boxes) and OsIDS1 OX plants (open boxes) under SD. Middle regions of fully emerged uppermost leaves were sampled at 30 DAG. For OsGI and Hd1, monitoring occurred at ZT 10 h and ZT 14 h, respectively; for others, at ZT 2 h. Y-axis, relative transcript level compared with rice OsUbi1. Error bars indicate standard deviations; n = 4 or more.