Late-flowering phenotypes of NaTOC1 silenced N. attenuata N. attenuata . (A) Phenotypes of transgenic plants silenced in NaTOC1 gene expression (irTOC1) with an inverted repeat (ir) RNAi construct. (B) Mean (± SE) levels of NaTOC1 (n = 3) transcript accumulation at zeitgeber time (ZT) 12 in wild-type and in several irTOC1 lines. (C) Time on weeks of WT and 2 selected irTOC1 lines to reach flowering stage (n = 5). (D) Mean (± SE) number of leaves at flowering stage (n = 5).