<i>OsK4-RNAi</i> plants exhibit early flowering.

<p>(A) The mRNA expression levels of <i>OsK3</i> and <i>OsK4</i> in WT and RNAi plants. The values presented are the mean ± s.d. of three independent experiments and two biological replicates. (B) The early flowering phenotype of <i>OsK4</i>-RNAi plants in a paddy field (middle and right). WT Nipponbare (left). (C) Flowering time of <i>OsK3-RNAi</i>, <i>OsK4-RNAi</i> and WT plants under different day-length conditions (n = 12). NDs, natural day conditions; SDs, short day conditions; LDs, long day conditions. (D) Flowering time of <i>hdr1</i>, <i>OsK4-RNAi</i>, <i>hdr1</i>, <i>OsK4-RNAi</i> and WT plants under NDs and LDs (n = 12). s.d.: standard deviations.