Actual paddy yield of wild-type (WT) and pPP2::AtSUC2 rice plants. Plants were grown in a randomized complete block design with eight replications. Each block contained 60 plants. Student’s t test revealed a significant difference in grain yield between wild-type and pPP2::AtSUC2 plants, and this effect was consistent across 4 years. Data from 2010 (A), 2011 (B), 2012 (C), and 2013 (D). Data are given as means ± sd (n = 8). **, Statistically different from the wild type (P < 0.01). A Student’s t test was used to generate the P values.