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| DOI: | 10.1111/j.1469-8137.2004.00979.x |
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| Web URL(s): | http://onlinelibrary.wiley.com/doi/10.1111/j.1469-8137.2004.00979.x/pdf
Last checked: 11/23/2015
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | Dawson, L. A.;
Thornton, B.;
Pratt, S. M.;
Paterson, E. |
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| Author Affiliation: | Soil Plant Microbial Interactions, The Macaulay Institute, Craigiebuckler, Aberdeen, United Kingdom |
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| Title: | Morphological and topological responses of roots to defoliation and nitrogen supply in Lolium perenne and Festuca ovina |
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| Section: | Research
Other records with the "Research" Section
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| Source: | New Phytologist. Vol. 161, No. 3, March 2004, p. 811-818. |
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| Publishing Information: | Oxford, England: Blackwell Publishing, for the New Phytologist Trust |
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| # of Pages: | 8 |
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| Related Web URL: | http://onlinelibrary.wiley.com/doi/10.1111/j.1469-8137.2004.00979.x/abstract
Last checked: 01/17/2014
Notes: Abstract only |
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| Keywords: | TIC Keywords: Morphology; Roots; Defoliation; Nitrogen fertilization; Lolium perenne; Festuca ovina
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| Abstract/Contents: | "This study examined morphological and topological responses of nodal root axes to defoliation in a fast- and slow-growing grass species. Vegetative tillers of both Lolium perenne and Festuca ovina were grown on slant boards and either left intact or subjected to repeated defoliation, under both a high nitrogen (N) and a low N supply. Root length, diameter and branching characteristics were measured on individual nodal root axes. The total axis root length of F. ovina was less when plants had been defoliated. Root axis weight, primary root axis length and primary root diameter were also less with defoliation than an undefoliated control, under high N. Under low N conditions the root axes of F. ovina had a more randomly branched topology without defoliation. For L. perenne under low N conditions, the length of the primary root axis was longer with defoliation than in an undefoliated control, while the primary root axis diameter decreased. By contrast to F. ovina, the root axes of L. perenne had a more randomly branched topology without defoliation only when supplied with high N. The greatest plasticity in branching caused by defoliation was observed under high N for L. perenne and under low N for F. ovina. Although grass root axis topology has, in general, a herringbone in structure, the nodal root system can alter root axis structure in response to defoliation." |
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| Language: | English |
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| References: | 32 |
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| Note: | Figures
Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Dawson, L. A., B. Thornton, S. M. Pratt, and E. Paterson. 2004. Morphological and topological responses of roots to defoliation and nitrogen supply in Lolium perenne and Festuca ovina. New Phytol. 161(3):p. 811-818. |
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| DOI: 10.1111/j.1469-8137.2004.00979.x |
| Web URL(s):
http://onlinelibrary.wiley.com/doi/10.1111/j.1469-8137.2004.00979.x/pdf
Last checked: 11/23/2015
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: QK 1 .N38 |
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