High yielding biomass genotypes of willow (Salix spp.) show differences in below ground biomass allocation

Biomass & Bioenergy
Jennifer CunniffAngela Karp

Abstract

Willows (Salix spp.) grown as short rotation coppice (SRC) are viewed as a sustainable source of biomass with a positive greenhouse gas (GHG) balance due to their potential to fix and accumulate carbon (C) below ground. However, exploiting this potential has been limited by the paucity of data available on below ground biomass allocation and the extent to which it varies between genotypes. Furthermore, it is likely that allocation can be altered considerably by environment. To investigate the role of genotype and environment on allocation, four willow genotypes were grown at two replicated field sites in southeast England and west Wales, UK. Above and below ground biomass was intensively measured over two two-year rotations. Significant genotypic differences in biomass allocation were identified, with below ground allocation differing by up to 10% between genotypes. Importantly, the genotype with the highest below ground biomass also had the highest above ground yield. Furthermore, leaf area was found to be a good predictor of below ground biomass. Growth environment significantly impacted allocation; the willow genotypes grown in west Wales had up to 94% more biomass below ground by the end of the second rotation. A single inv...Continue Reading

References

Dec 1, 1990·Tree Physiology·Kurt S. PregitzerPhu V. Nguyen
Jan 28, 2006·Science·Arthur J RagauskasTimothy Tschaplinski
Apr 22, 2008·The New Phytologist·Angela Karp, Ian Shield
Sep 15, 2009·Trends in Plant Science·Deirdre C RooneyAngela Hodge
Sep 17, 2014·Proceedings of the National Academy of Sciences of the United States of America·Peter B ReichJacek Oleksyn
Feb 9, 2016·Bioenergy Research·Francesco AgostiniGoetz M Richter

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Citations

Sep 10, 2016·Applications in Plant Sciences·Craig H Carlson, Lawrence B Smart
Dec 21, 2016·International Journal of Phytoremediation·François CourchesneMichel Labrecque
Apr 21, 2020·Frontiers in Plant Science·Xiang-Lin ZhugeHai-Ling Yang

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