Full TGIF Record # 200546
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DOI:10.1007/s11104-005-2419-9
Web URL(s):https://link.springer.com/content/pdf/10.1007%2Fs11104-005-2419-9
    Last checked: 10/05/2017
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    Access conditions: Item is within a limited-access website
Publication Type:
i
Refereed
Author(s):Collet, Catherine; Löf, Magnus; Pagès, Loïc
Author Affiliation:Collet: LERFoB, INRA, Champenoux, France; Löf: SLU, Southern Swedish Forest Research Centre, Alnarp, Sweden; Pagès: Unité PSH, INRA, Site Agroparc, Avignon, France
Title:Root system development of oak seedlings analysed using an architectural model. Effects of competition with grass
Source:Plant and Soil. Vol. 279, No. 1-2, January 2006, p. 367-383.
# of Pages:17
Publishing Information:Dordrecht, The Netherlands: Kluwer Academic Publishers
Related Web URL:http://www.springerlink.com/content/43234274714x7386/
    Last checked: 03/27/2012
    Notes: Abstract only
Keywords:TIC Keywords: Branching; Degradation; Root length; Root width; Rooting; Seedling competition; Tree root competition
Abstract/Contents:"A dynamic 3D model of root system development was adapted to young sessile oak seedlings, in order to evaluate the effects of grass competition on seedling root system development. The model is based on a root typology and the implementation of a series of developmental processes (axial and radial growth, branching, reiteration, decay and abscission). Parameters describing the different processes are estimated for each root type. Young oak seedlings were grown for 4 years in bare soil or with grass competition and were periodically excavated for root system observation and measurements (topology of the root system, length and diameter of all roots with a diameter greater than 0.3 mm). In the fourth year, 40 cmO20 cmO20 cm soil monoliths were excavated for fine root measurement (root density and root length). Root spatial development was analysed on a sub-sample of roots selected on four seedlings. The model was a guideline that provided a complete and consistent set of parameters to represent root system development. It gave a comprehensive view of the root systems and made it possible to quantify the effects of competition on the different root growth processes. The same root typology was used to describe the seedlings in bare soil and in grass. Five root types were defined, from large tap roots to fine roots. Root system size was considerably reduced by grass competition. Branching density was not affected but the branch roots were always smaller for the seedlings grown in competition. Reiteration capacity was also reduced by competition. Cross sectional areas before and after branching were linearly related with a scaling coefficient close to 1, as predicted by the pipe model theory. This relationship was not affected by grass competition."
Language:English
References:53
Note:Tables
Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Collet, C., M. Löf, and L. Pagès. 2006. Root system development of oak seedlings analysed using an architectural model. Effects of competition with grass. Plant Soil. 279(1-2):p. 367-383.
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DOI: 10.1007/s11104-005-2419-9
Web URL(s):
https://link.springer.com/content/pdf/10.1007%2Fs11104-005-2419-9
    Last checked: 10/05/2017
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
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