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Fig. 4 | BMC Plant Biology

Fig. 4

From: Phenotypic variation of root-system architecture under high P and low P conditions in potato (Solanum tuberosum L.)

Fig. 4

Biplots generated from PCA with the percentage of variance explained by the first two principal components (Dim 1, Dim 2) for root traits in high P (HP) and in low P (LP). Directional vectors represent traits and dots represent potato genotypes. Dot colors display the rooting types “small” (green), ”medium” (red) and “large” (green) as defined by cluster analysis at HP. Typical root systems belonging to the clusters “small“ (E, H), “medium“ (F, I) and “large“ (G, J) according to cluster analysis. E-G are from the HP and H-J from the LP treatment. E and H, F and I, and G and J are the same genotypes

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