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Fig. 4 | BMC Plant Biology

Fig. 4

From: Markers associated with heading and aftermath heading in perennial ryegrass full-sib families

Fig. 4

Heatmap illustrates regions associated with heading over six full-sib families on perennial ryegrass LG2. A Kruskal-Wallis test was performed on each marker to identify significant regions for heading. Using the perennial ryegrass genome zipper [26, 30] we identified a putative gene order for markers on LG2. These data were used to construct the heatmap for each family. A perennial ryegrass transcriptome-based genetic linkage map upon which GenomeZipper was based was used as reference to construct LG2 [26, 27] and placed above the heatmap. Each bar in the heatmap represents region between two genetic markers from the linkage map. The median Kruskal-Wallis test statistic was calculated for markers binned between markers on the genetic linkage map and used to construct the heatmap. Putative orthologs of LpPRR37 and LpTFL1, were identified in the phylogenetic analysis and placed onto LG2 using genetic positions from genome zipper. The genetic positions of these orthologs were extrapolated over the heatmap. Color of the heatmap illustrates the test-statistic of the Kruskal-wallis analysis from 0 to 23

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