Figure legends
Figure 1. Mean trait values in response to different N availability in Arabidopsis accessions. Screening of Arabidopsis accessions for early rosette diameter (ERD, n = 176), final rosette diameter (FRD, n = 155), flowering time (FT, n = 163), and yield (YIE, n = 134) at optimal (Opt), intermediate (Int), and limiting (Lim) N conditions. A. Boxplots showing the mean values for the complex traits across accessions in each N condition. The line indicates the median value. B. k -means clustering of the reaction norms representing groups of accessions with similar profiles in response to N availability for ERD (n = 142), FRD (n = 109), FT (n = 127), and YIE (n = 102) at optimal, intermediate or limiting N. For each cluster, the profile is represented by a different color. The accessions belonging to each cluster are given in Table S2. The optimal number, k, of clusters for each trait was determined by silhouette index (see Methods).
Figure 2. Plasticity of complex traits in response to N availability in Arabidopsis accessions. A. Boxplots showing the CV of the accessions for each trait across the three nitrogen conditions (ERD, n = 142, FRD, n = 109, FT, n = 127, YIE, n = 102).B. Clustering of the accessions based on the CVs for the four phenotypes (n=77, with the CVs for all phenotypes available).C. Spearman correlation between the CV of complex traits across the three nitrogen conditions. Adjusted p-values were calculated using Benjamini-Hochberg correction. Significant rscorrelations (FDR < 0.05) are represented as red, for positive, and blue, for negative.