期刊
INDUSTRIAL CROPS AND PRODUCTS
卷 108, 期 -, 页码 149-161出版社
ELSEVIER
DOI: 10.1016/j.indcrop.2017.06.030
关键词
Ash; Cellulose; Lignin; Salix; Short rotation coppice
资金
- North Central Regional Sun Grant Center at South Dakota State University through a grant from US Department of Energy Bioenergy Technologies Office [DE-FC36-05GO85041]
- US DOE Regional Feedstock Partnership
- USDA-NIFA through Northeast Sun Grant Initiative
- Agriculture and Food Research Initiative Competitive from USDA NIFA for NEVVBio Coordinated Agricultural Project [2012-68005-19703]
Yield improvement of woody bioenergy crops has been the major focus of breeding programs, but biomass quality is also important for conversion to biofuels. Using high-resolution thermogravimetric analysis, the composition of biomass samples from two shrub willow (Salix spp.) yield trial networks representing two distinct datasets were examined. Dataset 1 consisted of 12 yield trials containing 10 genotypes that mainly represented early cultivars from the US breeding program. Dataset 2 consisted of five trial locations containing 19 genotypes from later breeding efforts. Variation in ash and hemicellulose content were largely controlled by genetic factors, while cellulose and lignin content were heavily influenced by environmental effects. Mean biomass composition traits for dataset 1 were 2.1% ash, 42.4% cellulose, 18.7% hemicellulose and 25.5% lignin. For dataset 2 mean traits were 1.9% ash, 43.2% cellulose, 17.7% hemicellulose and 25.7% lignin. Yield was negatively correlated with lignin content and positively correlated with cellulose content at the level of environment. Elite triploid hybrid cultivars have the potential to produce more cellulose per unit area because of higher yields and/or greater cellulose content. These findings suggest that selection of genotypes for improved yield, as well as selection of growing environment, can improve feedstock quality for biofuel production.
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