Fig. 7

Expression of the circadian clock genes VunGI, VunELF3, VunTOC1 and VunLHY in cowpea leaves, pods and seeds sampled under field conditions. Expression represents the normalized expression NE according to the formula (NE) = 2^-(Ct experimental – Ctn). Collection points represent Time 6, 12, 18 and 24 h after dawn. Four samples were analyzed for each time point and error bars indicate the standard deviation. A significant rhythm in the time series according to JTK_CYCLE is indicated with an asterisk