Figure 4.

Illustration 4—This figure represents the availability of very unbalanced and heterogeneous phenotypic data for 37 traits in 50 trials in East Africa. The number of phenotypic records in each trial is represented with a colored box at the intersection of the trait (rows) and trial (columns). Gray squares represent unobserved traits and trial combinations. The mean number of traits observed in these studies was 10.38. Certain trait combinations were not observed together in these experiments; for example, root weight in water and dry matter content percentage, root number, and total carotenoid content.