Full TGIF Record # 293336
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DOI:10.1111/grs.12086
Web URL(s):http://onlinelibrary.wiley.com/doi/10.1111/grs.12086/pdf
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Publication Type:
i
Report
Author(s):Cristiano, Piedad M.; Posse, Gabriela; Bella, Carlos M. Di
Author Affiliation:Cristiano: Faculty of Science and Natural Sciences, University of Buenos Aires, Buenos Aires, Argentina; Posse: Climate and Water Institute, National Institute of Agricultural Technology (INTA), Hurlingham, Buenos Aires, Argentina; Bella: Climate and Water Institute, National Institute of Agricultural Technology (INTA), Hurlingham, Buenos Aires, Argentina and National Council for Scientific Research and Techniques (CONICET), Buenos Aires, Argentina
Title:Total and aboveground radiation use efficiency in C3 and C4 grass species influenced by nitrogen and water availability
Source:Grassland Science. Vol. 61, No. 3, September 2015, p. 131-141.
# of Pages:11
Publishing Information:Oxford, England: Blackwell Pub.
Related Web URL:http://onlinelibrary.wiley.com/doi/10.1111/grs.12086/abstract
    Last checked: 12/06/2017
    Notes: Abstract only
Keywords:TIC Keywords: Biomass determination; C-3 plant; C-4 plant; Evaluations; Nitrogen availability; Photosynthetically active radiation; Productivity; Solar radiation; Water availability
Abstract/Contents:"Absorbed solar radiation and radiation use efficiency (RUE) can be used to estimate net primary productivity of terrestrial ecosystems. In ecosystems dominated by grasses, belowground productivity cannot be neglected in terms of carbon balance because of the high proportion of biomass allocated to roots. The objective of this study was to quantify total RUE (tRUE), which includes both below and aboveground biomass of two C3 (Lolium perenne and Dactylis glomerata) and one C4 (Cynodon dactylon) grass species, under four treatments with contrasting water and nitrogen availabilities. The ratios between tRUE and aboveground RUE (aRUE) for species and treatments were analyzed. The tRUE was calculated from measurements of incoming photosynthetically active radiation (PAR), the fraction of PAR intercepted and shoots and roots productivity in pot experiments. The highest tRUE values in the three species were found in the treatment without growth limitations (4.32-6.93 g MJ-1), while the lowest tRUE values were observed under water and nutrient deficits conditions (2.62-2.85 g MJ-1). Contrary to predictions from the optimization theory, one of the C3 grass species allocated relatively high biomass to the roots when water availability was high while for the C4 grass species the shoot:root ratios and the root mass fraction did not change under resource limitation conditions com-pared to ample resource availability. tRUE exhibited small changes in the C4 species with variations in resource availability while it did decrease substantially for the C3 species when at least one of the resources was limited. These results highlight belowground biomass importance in calculating RUE of grasses."
Language:English
References:56
Note:Tables
Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Cristiano, P. M., G. Posse, and C. M. D. Bella. 2015. Total and aboveground radiation use efficiency in C3 and C4 grass species influenced by nitrogen and water availability. Grassland Science. 61(3):p. 131-141.
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DOI: 10.1111/grs.12086
Web URL(s):
http://onlinelibrary.wiley.com/doi/10.1111/grs.12086/pdf
    Last checked: 12/14/2017
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
http://onlinelibrary.wiley.com/doi/10.1111/grs.12086/full
    Last checked: 12/06/2017
    Access conditions: Item is within a limited-access website
http://onlinelibrary.wiley.com/doi/10.1111/grs.12086/epdf
    Last checked: 12/06/2017
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
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