Cultivar variation and selection potential relevant to the production of cellulosic ethanol from wheat straw
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Cultivar variation and selection potential relevant to the production of cellulosic ethanol from wheat straw. / Lindedam, Jane; Andersen, Sven Bode; DeMartini, J.; Bruun, Sander; Jørgensen, Henning; Felby, Claus; Magid, Jakob; Yang, B.; Wyman, C.E.
In: Biomass & Bioenergy, Vol. 37, 2012, p. 221-228.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Cultivar variation and selection potential relevant to the production of cellulosic ethanol from wheat straw
AU - Lindedam, Jane
AU - Andersen, Sven Bode
AU - DeMartini, J.
AU - Bruun, Sander
AU - Jørgensen, Henning
AU - Felby, Claus
AU - Magid, Jakob
AU - Yang, B.
AU - Wyman, C.E.
PY - 2012
Y1 - 2012
N2 - Optimizing cellulosic ethanol yield depends strongly on understanding the biological variation of feedstocks. Our objective was to study variation in capacity for producing fermentable sugars from straw of winter wheat cultivars with a high-throughput pretreatment and hydrolysis well-plate technique. This technique enabled us to estimate cultivar-related and environmental correlations between sugar yield, chemical composition, agronomic qualities, and distribution of botanical plant parts of wheat straw cultivars. Straws from 20 cultivars were collected in duplicates on two sites in Denmark. Following hydrothermal pretreatment (180 °C for 17.6 min) and co-hydrolysis, sugar release and sugar conversion were measured. Up to 26% difference in sugar release between cultivars was observed. Sugar release showed negative cultivar correlation with lignin and ash content, whereas sugar release showed positive cultivar correlation with content of carbohydrates and plant height. Accessibility to cellulose can impede the sugar conversion rate, and convertibility of each botanical fraction might be more important to overall sugar conversion than the relative proportions of botanical fractions. Our results suggest that selection of cultivars for improved biofuel feedstock of wheat straw is possible, because heritability of sugar release is 57% and there are few adverse correlations to other agronomic traits.
AB - Optimizing cellulosic ethanol yield depends strongly on understanding the biological variation of feedstocks. Our objective was to study variation in capacity for producing fermentable sugars from straw of winter wheat cultivars with a high-throughput pretreatment and hydrolysis well-plate technique. This technique enabled us to estimate cultivar-related and environmental correlations between sugar yield, chemical composition, agronomic qualities, and distribution of botanical plant parts of wheat straw cultivars. Straws from 20 cultivars were collected in duplicates on two sites in Denmark. Following hydrothermal pretreatment (180 °C for 17.6 min) and co-hydrolysis, sugar release and sugar conversion were measured. Up to 26% difference in sugar release between cultivars was observed. Sugar release showed negative cultivar correlation with lignin and ash content, whereas sugar release showed positive cultivar correlation with content of carbohydrates and plant height. Accessibility to cellulose can impede the sugar conversion rate, and convertibility of each botanical fraction might be more important to overall sugar conversion than the relative proportions of botanical fractions. Our results suggest that selection of cultivars for improved biofuel feedstock of wheat straw is possible, because heritability of sugar release is 57% and there are few adverse correlations to other agronomic traits.
U2 - 10.1016/j.biombioe.2011.12.009
DO - 10.1016/j.biombioe.2011.12.009
M3 - Journal article
VL - 37
SP - 221
EP - 228
JO - Biomass & Bioenergy
JF - Biomass & Bioenergy
SN - 0961-9534
ER -
ID: 37474403