Figure 1
From: Genome-wide association study of Fusarium ear rot disease in the U.S.A. maize inbred line collection
Genetic relationships between the 1687 lines of the full inbred association panel visualized using a principal component analysis of the K matrix. The horizontal and vertical axes are the first and second principal components, respectively. The color gradient from blue to red of the points represents the relative mean Fusarium ear rot score of each line (blue is most resistant and red is most susceptible). Five major recognized heterotic group clusters are labeled in large gray font, and the 26 nested association mapping (NAM) population founders and Mo17 are labeled in small black font for reference.