Fig. 3

Correlation heatmap reporting Spearman rank correlation coefficients for each trait vs white lupin linkage map QTL PCR marker comparison. Reference alleles were coded as 0, heterozygotes as 1, whereas alternative alleles as 2. Observations were performed during 2020 and 2021 growing seasons in a greenhouse at the Institute of Plant Genetics, Polish Academy of Sciences, Poznań, Poland (52°26′ N 16°54′ E). The bar below the heatmap indicates the color legend of correlation coefficients. Asterisk (*) indicates significant correlations in the following scheme: ****, p < 0.00001; ***, 0.00001 ≤ p < 0.0001; **, 0.0001 ≤ p ≤ 0.001; *, 0.001 ≤ p ≤ 0.05.; –, non-significant.