Fig. 2

Comparison of GWAS results across five of the post-harvest destructively measured traits. The data in this Circos plot results from 100 cross-validated (20 times 5-fold) GWAS runs performed within each treatment for the five studied traits including dry weight (DW), fresh weight (DW), plant height (HEI), tiller number (TN), and water use efficiency (WUE). Barley chromosomes are shown on the inner circle with different colors and centromeres are indicated with transparent boxes. For each trait, the first (inner) track represents the frequency of QTL detection in a 5-cM window while the outer track represents the effect of this QTL. The maximum height of the effect bars for each trait are 1.3 g for DW, 9 cm for HEI, 1.82 for TN, 0.1 g/g water for WUE. Window positions (in cM, following Maurer et al. 2015) are ordered clockwise per chromosome. In the inner track, QTL appearing under control and drought stress treatment are represented with black and gray bars, respectively. The effect of the QTL conferred by the wild allele relative to Barke is represented on the outer track, where blue and red bars indicate decreasing and increasing wild barley QTL effects, respectively for each treatment. Candidate genes, potentially explaining the observed QTL effects, are indicated inside the inner circle