Fig. 1
From: Genetic and genomic analysis of the seed-filling process in maize based on a logistic model

A diagrammatic representation of the seed-filling curve (green) and the filling rate curve (purple). Several seed-filling characteristic parameters are indicated. k is the final seed dry weight; vmax is the maximum filling rate; lna/b is time for reaching the median final dry weight; and w1, w2, and w3 are accumulated dry weight during the gradual growth period (t1), fast growth period (t2–t1), and slow growth period (t3–t2), respectively. t1 and t2 are DAPs (days after pollination) reaching the first and second inflexion of the filling curve, respectively; and t3 is the total filling duration