Fig. 2. Distribution of Tannin1 (top panels) and Maturity1 (bottom panels) alleles (represented by red/purple/blue) across space and along environmental gradients.

Gray boxes indicate regional subsets where the locus showed the strongest association with environment: Tannin1 was most strongly associated with growing season length in South Asia, and Maturity1 was most strongly associated with absolute latitude in southern Africa. The T allele at position 61667908 on chromosome 4 corresponds to the null Tannin1 allele, whereas the T allele at position 40286721 on chromosome 6 corresponds to the null Maturity1 allele.