Fig. 4

Expression analysis of OsHox32. a OsHox32 expression in different organs. SAM: shoot apical meristem. Root indicates the young roots of a 30-day-old seedling. Leaf indicates a mature leaf blade at the late tillering stage (about 12:00 at noon). Sheath indicates a leaf sheath at the late tillering stage. Stem indicates a stem at the first internode. Panicles 1–3 represent the different stages of young panicles; panicle 1, 13 cm long young panicle; panicle 2, 4 cm long young panicle; panicle 3, the panicle before flowering (heading stage). b and c OsHox32 expression in leaves of different ages. b a wild type plant at 60 days old in the field. L1-L4 are leaves of different ages. d OsHox32 expression at different developmental stages. The penultimate leaves were collected at different development stages to analyze the expression of OsHox32. e and f OsHox32 expression during different photoperiods. After treatment with different photoperiods, RNA was isolated from leaves once every 3 h for 24 h to analyze the expression of OsHox32 by qRT-PCR. e, Expression of OsHox32 under SD conditions. f Expression of OsHox32 under LD conditions. Black filled bars correspond to dark stage and open bars correspond to light stage