Figure 4

Expression patterns of the nine ZmZIP genes during embryo and endosperm development. The developing embryo (E) and endosperm (En) were obtained on indicated days after pollination (11 DAP, 13 DAP, 15 DAP, 17 DAP, 19 DAP and 21 DAP). The relative mRNA abundance of each gene in embryo (A) and endosperm (B) was normalized with ZmActin1 gene. Data from real-time RT-PCR experiments were analyzed according to the 2^-∆∆Ct method. The error bars indicate standard deviations.