Figure 1From: Standing variation and new mutations both contribute to a fast response to selection for flowering time in maize inbredsDescription of the Selection Scheme. Selection was conducted independently for individuals derived from F252 and MBS in order to obtain an Early and a Late population from each original seed lot. At each generation, S1 families produced by the selfing of the 10 most early-flowering individuals (rectangles with light gray patterns) and the 10 most late-flowering individuals (rectangles with black patterns) of the previous generation are phenotypically evaluated. Hundred individuals per family were sown in a 4 randomized block design. Each block therefore encompasses 25 individuals of each family and contains individuals from the Early and the Late population, as well as a control plot (open rectangles with a dashed line). The same protocol was repeated over generations.Back to article page