Table 7: Mean feedstock compositions estimated for four switchgrass based on half-sib progeny performance at the Knoxville, TN, under 1-cut (2010 to 2011) and 2-cut (2012 to 2013) system&.

Population Ethanol mL kg-1 Cellulose (%) Hemicellulose (%) Lignin (%)
-------------------------------One-cut system (2010-2011)---------------------------------------
ARK 260 a 41.4 a 37.0 ab 10.1 a
OKN 259 ab 41.0 b 37.1 a 10.1 a
OKS 258 b 40.9 b 36.7 bc 10.1 a
TX 256 c 40.4 c 36.7 c 9.9 a
Mean 258 41.0 36.8 10.1 a
LSD
--------------------------Two-cut system (2012-2013)----------------------------
ARK 258 a 38.1 a 40.4 ab 5.1 a
OKN 254 b 37.1 b 40.4 a 5.0 ab
OKS 253 c 37.1 b 40.2 ab 5.0 ab
TX 251 d 36.7 c 39.9 c 4.9 b
Mean 254 37.35 40.2 5.0
LSD