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Table 2 Analysis of variance in total sugar yielda

From: Cellulosic ethanol: interactions between cultivar and enzyme loading in wheat straw processing

Sugar yield (ANOVA): Model A
  Df num Df den F value Pr > F Significance
Enzyme loading 2 68 8486.04 < 0.0001 ***
Cultivar 4 68 2.10 0.0907 n.s.
Enzyme loading × cultivar 8 68 4.66 0.0001 ***
Sugar yield (ANOVA): Model B
  Df num Df den F value Pr > F Significance
Cultivar 4 20 9.01 0.0002 ***
  Mean sugar yield (g g -1 ptb)
Hereford 0.292a
Ambition 0.287ab
Smuggler 0.282ab
Frument 0.272b
Skalmeje 0.249c
Sugar yield (ANOVA): Model C
  Df Sum sq Mean Sq Pr > F Significance
Batch 9 0.019 0.0022 < 0.0001 ***
Size 2 0.023 0.011 < 0.0001 ***
Batch × size 18 0.00086 0.000048 0.2831 n.s.
Residual 59 0.0023 0.000039   
  Mean sugar yield (g g -1 dm ptb)
Small 0.295a
Medium 0.268b
Coarse 0.257c
  1. aAnalysis of variance (ANOVA) of total sugar yield (g g -1 dm pretreated biomass) affected by cultivar and enzyme loading in model A, by cultivar from total fractions of the second hydrolysis in model B and by batch, size and interaction from coarse, medium and small fraction in model C. Mean sugar yield (n = 3) with different numbers are significantly different (P ≥ 0.05). Significance values: *P = 0.05, **P = 0.01 and ***P = 0.001; n.s. = not significant.