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. 2016 Jan 14;58(3):266–279. doi: 10.1111/jipb.12452

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© 2015 The Authors. Journal of Integrative Plant Biology published by Wiley Publishing Asia Pty Ltd on behalf of Institute of Botany, Chinese Academy of Sciences

This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.

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Recombination bin‐map of recombinant inbred line (RIL) population and quantitative trait loci (QTL) mapping of silk color P1 (pericarp1) (A) The bin‐map consists of 7 319 bin markers inferred from 248 168 high‐quality SNPs in the RIL population and has a total genetic distance of 2812 cM. The physical position of the markers is based on the B73 RefGen_V2 sequence. Red: Chang7‐2 genotype; Blue: Zheng58 genotype; White: heterozygote. (B) Pairwise recombination fractions (upper left) and logarithm (base 10) of odds (LOD) scores for tests of linkage (bottom right) for all markers were calculated and graphed as a heatmap. Marker and chromosome numbers are provided in the axis labels. Red corresponds to low recombination or a high LOD score, while blue represents unlinked markers. (C) The composite interval mapping (CIM) plot for silk color shows the QTL identified on chromosomes 1 and 9. The location of the pigment gene pericarp color1 (p1) is indicated by red dashed lines.