Association analysis of haplotype combinations of DTH7, Ghd7, and DTH8 with flowering time. (A) Association analysis of various combinations of functional and nonfunctional haplotypes of DTH7, Ghd7, and DTH8 with flowering time under E1, E2, E3, and E4 conditions. (B) Variance analysis of the contributions of DTH7, Ghd7, or DTH8 individual locus and their combined effects on flowering time in the core collection. Flowering time of each accession is presented as means ± standard deviations (n = 20).