Cellulose, xylan, uronic acid, acetyl groups, cellulose/xylan and cellulose/lignin in RB867515 (RB) and <i>S</i>. <i>spontaneum</i> (AG) internodes.

Means followed by different letters differ significantly between internodes (Tukey test, p<0.05). Asterisks indicate a significant difference between the genotypes for the same internode (t-test, p<0.05), (n = 3). Cellulose, xylan, uronic acid, acetyl groups, cellulose/xylan and cellulose/lignin in RB867515 (RB) and S. spontaneum (AG) internodes.