Figure 6.

Illustration 4—Cassava data: A covariance graph for the covariance matrix resulting in a combined covariance matrix for 37 traits obtained by combining the sample covariance matrices from 50 phenotypic trials downloaded from CassavaBase. The green colored lines represent positive trait correlations, red colored lines represent negative trait correlations. The thickness of the line is an indication of the strength of the correlation. The traits that are not connected with any lines are estimated to be marginally independent. The abbreviations for the traits are the same as those given in Figure 5. Similar traits are grouped and have the same color nodes.