Fig. 1From: Identification of quantitative trait loci (QTLs) and candidate genes of seed Iron and zinc content in soybean [Glycine max (L.) Merr.]Frequency distribution of Fe and Zn content among the GB RIL population. a and b indicate the frequency distributions of the Fe and Zn content, respectively. The arrows represent the mean values of the corresponding parents used to construct the GB RIL population (Guizao1 and B13 cultivars)Back to article page