Soybean Root System Architecture Trait Study through Genotypic, Phenotypic, and Shape-Based Clusters
Root profiles of five iRoot categories. Images at 9 d were collected of the top 10 ranked genotypes of each iRoot category using the mean boundary with Fourier coefficients at five harmonics: (a) nutrient foraging type (), (b) drought tolerant (), (c) beard type (), (d) umbrella type (), and (e) maximum (). Axis units are in pixels. To facilitate comparisons, all the shapes were aligned at the top (at ) and were vertically centered ().