Fig. 2. A graph of seed protein (left axis- square symbols) and seed oil (right axis-circle symbols) versus seed yield (bottom axis) of each of the 76 F₅–derived recombinant inbred lines (RILs) in 1996 and 1997. The solid and open symbols represent RILs with a respective AA (Asgrow A3733) or BB (PI 437.088A) parental genotype at the RAPD marker locus OPAW13a. Trend lines and b coefficients in the right text boxes were generated by linear regression of RIL protein or oil on the yield of the same RIL. The b coefficients of protein regressed on oil, and oil regressed on protein, are shown in the left text box, and the square root of product of those b coefficients is the correlation of protein with oil.