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. 2021 Oct 29;12:718081. doi: 10.3389/fpls.2021.718081

Figure 2.

Figure 2

Heatmaps of Pearson's correlation coefficients for nine agronomic and quality traits in rye. Blue color indicates positive correlation and red color indicates negative correlation among different traits, with color intensity variance depicting the strength of correlation. GYD, grain yield; TIN, tiller number; TGW, thousand-grain weight; PHT, plant height; HDT, heading date; GPC, grain protein content; WAX, water extractable arabinoxylan content; TAX, total arabinoxylan content; STC, starch content. Categorization: 0.25 ≤ r <0.45 weak, 0.45 ≤ r < 0.65 moderate, 0.65 ≤ r < 0.85 strong, 0.85 ≤ r very strong. *p < 0.05, **p < 0.01, ***p < 0.001, blank for non-significant.