Seed oleic acid phenotype and FAD2-1 genotype association analysis for F
seeds of population 4. Average oleic acid content of F2 soybean seeds produced in Costa Rica from the segregating population developed from the cross 17D × S08-14788, population 4. X-axis labels indicate a the soybeans grouped by FAD2-1A and FAD2-1B genotype. AA = wild-type FAD2-1A alleles, aa = mutant S117N FAD2-1A alleles derived from 17D, BB = wild-type FAD2-1B alleles, bb = mutant P137R FAD2-1B alleles derived from PI 283327; brackets surround the number of soybean seed samples represented in the genotype class. Error bars indicate plus and minus one standard deviation from the mean. Oleic acid phenotype data of each genotype class is the mean of oleic acid content as a percentage of the total fatty acid content of the oil of all lines carrying the FAD2-1 genotype.