Fig. 6
Expression analysis of key flowering genes in genetic materials related to OsGI, OsPhyB and Hd1. Log10-transformed expression of Ghd7, Ehd1, Hd3a, and RFT1 in the single mutants and double mutants of OsPRR37 and OsGI (a, d, g and j), OsPRR37 and PhyB (b, e, h and k), and OsPRR37 and Hd1 (c, f, i and l), respectively. Samples were collected 2.5 h before and after dawn from 40-d-old plants under controlled LD conditions. Data represent mean ± SD of three replicates. Rice ubiquitin gene (Os02g0161900) was used for normalization. Different upper- and lower-case letters indicate significant differences at P < 0.05 by using Duncan’s test to compare the expression levels of indicated genes before and after dawn, respectively