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dc.contributor.author
Rodríguez, Daniel
dc.contributor.author
Andrade, Fernando Héctor
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dc.contributor.author
Goudriaan, Jan
dc.date.available
2019-05-10T18:59:04Z
dc.date.issued
2000-08-10
dc.identifier.citation
Rodríguez, Daniel; Andrade, Fernando Héctor; Goudriaan, Jan; Does assimilate supply limit leaf expansion in wheat grown in the field under low phosphorus availability?; Elsevier Science; Field Crops Research; 67; 3; 10-8-2000; 227-238
dc.identifier.issn
0378-4290
dc.identifier.uri
http://hdl.handle.net/11336/76078
dc.description.abstract
Under conditions of phosphorus deficiency, reductions in plant leaf area have been attributed to both direct effects of phosphorus (P) on the individual leaf expansion rate and a reduced availability of assimilates for leaf growth. Simulation techniques have been used to test the hypothesis of a non-trophic limitation to leaf expansion in wheat grown on P-deficient soils; this study provides further experimental evidence supporting this hypothesis, in a field experiment, we studied the effects of soil P additions (0-200 kg P2O5 ha-1) and assimilate availability (non-shaded and shaded treatments) on the expansion of individual leaves of wheat (Triticum aestivum L. cv. Oasis), light interception and radiation use efficiency. The soil was low in P (5.5 μg P g-1), the crop was drip irrigated and nitrogen was applied at non-limiting rates during the experiment. At 61 days after emergence (DAE), phosphorus deficiency reduced above ground biomass 70 and 61%, leaf area index 73 and 69%, the percent intercepted radiation 63 and 46%, and radiation use efficiency 21 and 31%, in non-shaded and shaded plots, respectively. Leaves of shaded plants had lower %WSC and lower accumulation of structural dry weight than non-shaded ones. In shaded leaves, there was a more important restriction to the accumulation of structural material in high-P than in low-P treatments. This and the fact that leaf expansion rate of individual leaves was negatively related to %WSC led us to conclude that leaf expansion in low P plants is unlikely to be limited by the availability of assimilates.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subject
Leaf Expansion
dc.subject
Phosphorus
dc.subject
Water-Soluble Carbohydrates
dc.subject
Wheat
dc.subject.classification
Agricultura
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dc.subject.classification
Agricultura, Silvicultura y Pesca
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dc.subject.classification
CIENCIAS AGRÍCOLAS
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dc.title
Does assimilate supply limit leaf expansion in wheat grown in the field under low phosphorus availability?
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-03-27T18:06:34Z
dc.journal.volume
67
dc.journal.number
3
dc.journal.pagination
227-238
dc.journal.pais
Países Bajos
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dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Rodríguez, Daniel. Universidad de Buenos Aires. Facultad de Agronomía; Argentina. Wageningen Agricultural University. Group of Theoretical Production Ecology. Department of Plant Sciences; Países Bajos
dc.description.fil
Fil: Andrade, Fernando Héctor. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Buenos Aires; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Goudriaan, Jan. Wageningen Agricultural University. Group of Theoretical Production Ecology. Department of Plant Sciences; Países Bajos
dc.journal.title
Field Crops Research
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/S0378-4290(00)00098-8
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0378429000000988
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