A, Response of GS, F1, and GR plants to a glyphosate rate of 868 g ae ha–1. B, Relationship between EPSPS genomic copy number and shikimate accumulation in two GS (circles), four GR (squares), and six F1 plants (diamonds) of K. scoparia. EPSPS copy number and accumulation of shikimate were determined as described in “Materials and Methods.”