Fig. 7
Effect of hydrothermal pretreatment on cellulose accessibility of natural variant Populus lines as measured by (a) water retention value and (b) dye adsorption via Simons’ staining method. Each sample was analyzed in triplicate. p-values for unpretreated and pretreated variants were 0.02669 and 0.00143, respectively. Columns with the same letter are not significantly different (p ≥ 0.05)