Fig. 1.

Root electrical capacitance (REC) family means and errors (±SE) of four replicates as well as their respective Tukey’s honest significant difference (HSD) at a 95% level of confidence. Outlined box plots to the right of bars represent the corresponding midparent value (±SD) for the parents of each family. Midparent means within box plots are denoted by bold horizontal lines. The male parent of family 425 was not present in this trial, thus the midparent box plot of family 425 is not shown. The species pedigree of each family is abbreviated above family identifiers, where pur = Salix purpurea, vim = S. viminalis, and miya = S. miyabeana. The direction of the cross is designated as female parent × male parent species.