Effect of elevated carbon dioxide on growth and nitrogen fixation of two soybean cultivars in northern China
Article
Article Title | Effect of elevated carbon dioxide on growth and nitrogen fixation of two soybean cultivars in northern China |
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ERA Journal ID | 5250 |
Article Category | Article |
Authors | Lam, Shu Kee (Author), Hao, Xingyu (Author), Lin, Erda (Author), Han, Xue (Author), Norton, Rob (Author), Mosier, Arvin R. (Author), Seneweera, Saman (Author) and Chen, Deli (Author) |
Journal Title | Biology and Fertility of Soils |
Journal Citation | 48 (5), pp. 603-606 |
Number of Pages | 4 |
Year | 2012 |
Place of Publication | Heidelberg, Germany |
ISSN | 0178-2762 |
1432-0789 | |
Digital Object Identifier (DOI) | https://doi.org/10.1007/s00374-011-0648-z |
Web Address (URL) | http://link.springer.com/article/10.1007%2Fs00374-011-0648-z |
Abstract | The effect of elevated carbon dioxide (CO2) concentration on symbiotic nitrogen fixation in soybean under open-air conditions has not been reported. Two soybean cultivars (Glycine max (L.) Merr. cv. Zhonghuang 13 and cv. Zhonghuang 35) were grown to maturity under ambient (415 ± 16 μmol mol -1) and elevated (550 ± 17 μmol mol -1) [CO2] at the free-air carbon dioxide enrichment experimental facility in northern China. Elevated [CO2] increased above- and below-ground biomass by 16-18% and 11-20%, respectively, but had no significant effect on the tissue C/N ratio at maturity. Elevated [CO2] increased the percentage of N derived from the atmosphere (%Ndfa, estimated by natural abundance) from 59% to 79% for Zhonghuang 13, and the amount of N fixed from 166 to 275 kg N ha -1, but had no significant effect on either parameter for Zhonghuang 35. These results suggest that variation in N2 fixation ability in response to elevated [CO2] should be used as key trait for selecting cultivars for future climate with respect to meeting the higher N demand driven by a carbon-rich atmosphere. |
Keywords | free-air carbon dioxide enrichment; FACE; natural abundance; soybean cultivar; symbiotic nitrogen fixation |
ANZSRC Field of Research 2020 | 370201. Climate change processes |
300406. Crop and pasture improvement (incl. selection and breeding) | |
370103. Atmospheric aerosols | |
Public Notes | © 2012 Springer-Verlag. Published version deposited in accordance with the copyright policy of the publisher. |
Byline Affiliations | University of Melbourne |
Chinese Academy of Agricultural Sciences, China | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q2736/effect-of-elevated-carbon-dioxide-on-growth-and-nitrogen-fixation-of-two-soybean-cultivars-in-northern-china
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