DRY MATTER YIELD AND CARBON PARTITIONING IN THE ABOVEGROUND PART OF SWITCHGRASS (PANICUM VIRGATUM L.) GERMPLASM
Bronislava Butkutė, Nijolė Lemežienė, Jurgita Cesevičienė, Inga Liaudanskienė
Pagini: 87-97
Publicat: 1 Jan 2013
Vizualizări: 239
Rezumat: Carbon (C) accumulated in biomass can be converted into usable forms of energy like methane, bioethanol or solid fuel. Understanding the partitioning of aboveground biomass and C plays an important role in optimizing its pre-treatment technologies. Our objectives were to determine dry matter yield (DMY) and C partitioning in switchgrass germplasm. Plants were sampled at heading (HS) and seed filling (SFS) stages. The biomass of the SFS-sampled plants was separated into leaves (blades+sheaths), stems, and panicles. C content was determined by dry combustion. C yield per plant (CY) at HS ranged from 25.9 to 171 g (37.3 g on average for plants in the first harvest year, and 147 for those in the second harvest year), at SFS CY varied within a range of 79.8 ‒ 295g and averaged 119 and 252g depending on the year of growth. DMY was a weighted factor for such results. At SFS, DMY of stems accounted on average for 46.3%, leaves for 40.5%, and panicles for 13.2% of the aboveground biomass of whole plant with respective C concentrations of 462, 439 and 459 g kg-1 DM.
Cuvinte cheie: bioenergy plant, carbon, biomass dry matter yield, aboveground plant part, panicum virgatum l.
Citează acest articol: Bronislava Butkutė, Nijolė Lemežienė, Jurgita Cesevičienė, Inga Liaudanskienė. DRY MATTER YIELD AND CARBON PARTITIONING IN THE ABOVEGROUND PART OF SWITCHGRASS (PANICUM VIRGATUM L.) GERMPLASM. Journal of International Scientific Publications: Agriculture & Food 1, 87-97 (2013). https://www.scientific-publications.net/en/article/1002905/
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