Show simple item record Davey, Christopher Jones, Laurence Squance, Michael Purdy, Sarah Maddison, Anne Cunniff, Jennifer Donnison, Iain Clifton-Brown, John 2016-03-14T23:02:17Z 2016-03-14T23:02:17Z 2017-01-25
dc.identifier.citation Davey , C , Jones , L , Squance , M , Purdy , S , Maddison , A , Cunniff , J , Donnison , I & Clifton-Brown , J 2017 , ' Radiation capture and conversion efficiencies of Miscanthus sacchariflorus, M. sinensis and their naturally occurring hybrid M. × giganteus ' GCB Bioenergy , vol. 9 , no. 2 , pp. 385-399 . en
dc.identifier.issn 1757-1693
dc.identifier.other PURE: 6758524
dc.identifier.other PURE UUID: 40477978-724a-4bd5-bf68-979d79479154
dc.identifier.other Scopus: 84959440714
dc.identifier.other PubMed: 28261330
dc.identifier.other PubMedCentral: PMC5310369
dc.identifier.other 2160/30701
dc.description BBSRC Sustainable Bioenergy Centre (BSBEC). Grant Number: BB/G016216/1 BBSRC Energy Grasses & Biorefining Institute Strategic Programme. Grant Number: BBS/E/W/00003134 en
dc.description.abstract Miscanthus is a rhizomatous C4 grass of great interest as a biofuel crop because it has the potential to produce high yields over a wide geographical area with low agricultural inputs on marginal land less suitable for food production. At the moment, a clonal interspecific hybrid Miscanthus × giganteus is the most widely cultivated and studied in Europe and the United States, but breeding programmes are developing newer more productive varieties. Here, we quantified the physiological processes relating to whole season yield in a replicated plot trial in Wales, UK. Light capture and conversion efficiency were parameterized for four carefully selected genotypes (M. sinensis, M. sacchariflorus and Miscanthus × giganteus). Differences in the canopy architecture in mature stands as measured by the extinction coefficient (k) were small (0.55–0.65). Sensitivity analysis on a mathematical model of Miscanthus was performed to quantify the accumulative intercepted photosynthetically active radiation (iPAR) in the growing season using (i) k, (ii) variation in the thermal responses of leaf expansion rate, (iii) base temperature for degree days and (iv) date start of canopy expansion. A 10% increase in k or leaf area per degree day both had a minimal effect on iPAR (3%). Decreasing base temperature from 10 to 9 °C gave an 8% increase in iPAR. If the starting date for canopy expansion was the same as shoot emergence date, then the iPAR increases by 12.5%. In M. × giganteus, the whole season above ground and total (including below ground) radiation-use efficiency (RUE) ranged from 45% to 37% higher than the noninterspecific hybrid genotypes. The greater yields in the interspecific hybrid M. × giganteus are explained by the higher RUE and not by differences in iPAR or partitioning effects. Studying the mechanisms underlying this complex trait could have wide benefits for both fuel and food production. en
dc.format.extent 15 en
dc.language.iso eng
dc.relation.ispartof GCB Bioenergy en
dc.rights en
dc.subject Miscanthus en
dc.subject diversity en
dc.subject extinction coefficient en
dc.subject radiation use efficiency en
dc.subject yield en
dc.subject sensitivity analysis en
dc.title Radiation capture and conversion efficiencies of Miscanthus sacchariflorus, M. sinensis and their naturally occurring hybrid M. × giganteus en
dc.type /dk/atira/pure/researchoutput/researchoutputtypes/contributiontojournal/article en
dc.description.version publishersversion en
dc.contributor.institution Department of Biological, Environmental and Rural Sciences en
dc.description.status Peer reviewed en

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