Fig. 1

Composition of poplar variants. From left to right, these graphs show glucan, xylan, glucan + xylan, and Klason lignin compositions, respectively, of the raw poplar variants. Open circles represent rare variants, solid circles represent the low lignin comparator (GW-11012), solid squares represent the high lignin comparator (BESC-316), and the triangle and polygon represent BESC-97 and GW-9762 comparators, respectively. BESC standard poplar is shown with a solid star. The square inside the box plot represents the mean values of the population. All samples except BESC standard were part of the descriptive box plot statistics