Extended Data Fig. 8: Identification of ZmKOB1 as a differentiated gene between the PA and SPT heterotic groups.
From: Genomic insights into historical improvement of heterotic groups during modern hybrid maize breeding
a, FST (above the axis) and allele frequency difference (AFD) of ZmKOB1. The candidate gene was visualized by green shadow. b, Gene structure and haplotype analyses of ZmKOB1. c, Box plots for kernel weight per ear (KWPE), kernel number per row (KNPR) and ear length (EL) for the four haplotypes. Center line, medium; box limits, upper and lower quartiles; whiskers, 1.5 × interquartile range. n indicates the number of inbred lines for each haplotype. The significance of difference was analyzed using two-sided Wilcoxon test. d, Haplotype frequency of ZmKOB1 in different breeding eras in the PA and SPT heterotic groups.
