Fig. 4

Transcript levels of RhCKX genes in RhNAP-silenced petals. Expression of RhNAP in petals was silenced by virus induced gene silencing (VIGS). Petals were sampled for qRT-PCR analysis of RhCKX gene expression and RhUBI1 was used as an internal control. All data shown are means ± standard deviation (n = 3); Student’s t-test, *P < 0.05, **P < 0.01