English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/97209
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
DC FieldValueLanguage
dc.contributor.authorAranjuelo, Iker-
dc.contributor.authorCabrera-Bosquet, Llorenç-
dc.contributor.authorAraus, José Luis-
dc.contributor.authorNogués, Salvador-
dc.identifierdoi: 10.1111/j.1438-8677.2012.00593.x-
dc.identifierissn: 1435-8603-
dc.identifiere-issn: 1438-8677-
dc.identifier.citationPlant Biology 15(1): 135-143 (2013)-
dc.description.abstractFurther knowledge of the processes conditioning nitrogen use efficiency (NUE) is of great relevance to crop productivity. The aim of this paper was characterise C and N partitioning during grain filling and their implications for NUE. Cereals such as bread wheat (Triticum aestivum L. cv Califa sur), triticale (×Triticosecale Wittmack cv. Imperioso) and tritordeum (×Tritordeum Asch. & Graebn line HT 621) were grown under low (LN, 5mm NH4NO3) and high (HN, 15mm NH4NO3) N conditions. We conducted simultaneous double labelling (12CO2 and 15NH4 15NO3) in order to characterise C and N partitioning during grain filling. Although triticale plants showed the largest total and ear dry matter values in HN conditions, the large investment in shoot and root biomass negatively affected ear NUE. Tritordeum was the only genotype that increased NUE in both N treatments (NUEtotal), whereas in wheat, no significant effect was detected. N labelling revealed that N fertilisation during post-anthesis was more relevant for wheat and tritordeum grain filling than for triticale. The study also revealed that the investments of C and N in flag leaves and shoots, together with the 'waste' of photoassimilates in respiration, conditioned the NUE of plants, and especially under LN. These results suggest that C and N use by these plants needs to be improved in order to increase ear C and N sinks, especially under LN. It is also remarkable that even though tritordeum shows the largest increase in NUE, the low yield of this cereal limits its agronomic value. © 2012 German Botanical Society and The Royal Botanical Society of the Netherlands.-
dc.description.sponsorshipThis work was funded by the Spanish National Research and Development Programme–European Regional Development Fund ERDF (project nos. CGL2009-13079-CO2, AGL2010-20180 and AGL 2011-30386-C02-02). Iker Aranjuelo was the recipient of a Ramón y Cajal research grant (Ministerio de Ciencia e Innovación). Finally, we would like to thank the private company AGRASYS and Antonio Martín for providing HT 621 seeds.-
dc.subjectGrain filling-
dc.subjectN use efficiency-
dc.subjectIsotopic labelling-
dc.titleCarbon and nitrogen partitioning during the post-anthesis period is conditioned by N fertilisation and sink strength in three cereals-
dc.description.versionPeer Reviewed-
Appears in Collections:(IDAB) Artículos
Files in This Item:
File Description SizeFormat 
accesoRestringido.pdf15,38 kBAdobe PDFThumbnail
Show simple item record

Related articles:

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.