Click on image to view larger version.
Figure 1. Biplot generated using standardized Best Linear Unbiased Predictor values of genotype root trait means from 386 F1 progeny from a white clover mapping population grown in sand. Components I and II account for 55 and 21% of total variation, respectively. The different symbols indicate progeny Groups 1 to 5 generated from cluster analysis. The vectors represent the root traits: RDI, root diameter (mm); RF, number of root forks; RL, root length (cm); RS, root surface area (cm2); RT, No. root tips; RD, root dry weight (g); RV, root volume (cm3); FL, ratio RF/RL (no. cm–1); TL, ratio RT/RL (no. cm–1); SRL, specific root length (cm mg–1). The letters a, b, c, and d, indicate individual progeny genotypes that had the highest above average expression for a range of traits. The arrow (
) indicates the label of a directional vector that is not legible.
