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DOI: | 10.1139/b2012-091 |
Web URL(s): | http://www.nrcresearchpress.com/doi/full/10.1139/b2012-091#.UQLhvlHsadA Last checked: 02/04/2013 Access conditions: Item is within a limited-access website http://www.nrcresearchpress.com/doi/pdf/10.1139/b2012-091 Last checked: 02/04/2013 Requires: PDF Reader Access conditions: Item is within a limited-access website |
Publication Type:
| Refereed |
Author(s): | Williamson, Melinda M.;
Wilson, Gail W. T.;
Hartnett, David C. |
Author Affiliation: | Williamson and Wilson: Natural Resource Ecology and Management, Oklahoma State University, Stillwater, OK; Hartnett: Division of Biology, Kansas State University, Manhattan, KS |
Title: | Controls on bud activation and tiller initiation in C3 and C4 tallgrass prairie grasses: The role of light and nitrogen |
Section: | Ecology Other records with the "Ecology" Section
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Source: | Botany [Canada]. Vol. 90, No. 12, December 2012, p. 1221-1228. |
Publishing Information: | Vancouver, British Columbia, Canada: The National Research Council of Canada |
# of Pages: | 8 |
Related Web URL: | http://www.nrcresearchpress.com/doi/abs/10.1139/b2012-091#.UQLie1HsadA Last checked: 02/04/2013 Notes: Abstract only |
Keywords: | TIC Keywords: Bud development; Climatic change; Grazing; Light intensity; Nitrogen level; Tillering rate
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Abstract/Contents: | "Population dynamics of perennial grasses in tallgrass prairie ecosystems are strongly influenced by vegetative outgrowth from their belowground bud banks. We examined the role of light and nitrogen in regulating tiller initiation and tested an integrated model of controls on bud dormancy and activation in several C3 and C4 grasses. In addition, we assessed the interaction of nitrogen and light quantity and red far red spectral composition on tiller initiation. Belowground perennating organs of three C3 and three C4 species were grown under full light or dark conditions, amended with one of four nitrogen concentrations (0 to 350 ppm N). Dormant buds were also subjected to full light under different spectral compositions or to continuous darkness. Our results among C3 grasses support the integrated model as light and nitrogen played important and interacting roles in the regulation of bud banks. However, differences in responses among C4 grasses and a lack of light x nitrogen interactions suggest that an alternative model may be necessary for this functional group. Our results provide predictions of responses to nitrogen enrichment or light imitations in prairie ecosystems due to interacting disturbances such as reduction in fire frequencies, alterations in grazing intensities, or climate change." |
Language: | English |
References: | 29 |
Note: | Abstract appears in English and French Graphs |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Williamson, M. M., G. W. T. Wilson, and D. C. Hartnett. 2012. Controls on bud activation and tiller initiation in C3 and C4 tallgrass prairie grasses: The role of light and nitrogen. Can. J. Bot. 90(12):p. 1221-1228. |
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| DOI: 10.1139/b2012-091 |
| Web URL(s): http://www.nrcresearchpress.com/doi/full/10.1139/b2012-091#.UQLhvlHsadA Last checked: 02/04/2013 Access conditions: Item is within a limited-access website http://www.nrcresearchpress.com/doi/pdf/10.1139/b2012-091 Last checked: 02/04/2013 Requires: PDF Reader Access conditions: Item is within a limited-access website |
| MSU catalog number: b2201022a |
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