Stability of F3 seed oil linolenic acid phenotype in different GmFAD3 genotypes. Each column represents mean linolenic acid content, expressed as a percentage of the oil fraction, from whole F3 seeds, with error bars representing plus and minus one standard deviation from the mean. Five independent homozygous F2 plants for each FAD3 genotype were analyzed, along with the parental lines 10-73 and RCAT 0716L, grown in the same field environment. Capital letters in the genotype represent functional alleles and lowercase letters represent mutant alleles. Columns are shaded based on their relative number of functional FAD3 alleles present with darker columns representing samples with fewer functional alleles.