Fig. 5

Principal component analysis (PCA) of alfalfa root phenotypes from UMN3233 and UMN 3234 seedlings at 14 days after planting. Root system architecture was categorized as branch rooted (red circle), tap rooted (green triangle), or an intermediate phenotype (blue square). The top three principal components explained 50.65%, 21.14%, and 7.28% of the variance in seedling root architecture