Cargando…

(15)N Natural Abundance Evidences a Better Use of N Sources by Late Nitrogen Application in Bread Wheat

This work explores whether the natural abundance of N isotopes technique could be used to understand the movement of N within the plant during vegetative and grain filling phases in wheat crop (Triticum aestivum L.) under different fertilizer management strategies. We focus on the effect of splittin...

Descripción completa

Detalles Bibliográficos
Autores principales: Fuertes-Mendizábal, Teresa, Estavillo, José M., Duñabeitia, Miren K., Huérfano, Ximena, Castellón, Ander, González-Murua, Carmen, Aizpurua, Ana, González-Moro, María Begoña
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6024020/
https://www.ncbi.nlm.nih.gov/pubmed/29988400
http://dx.doi.org/10.3389/fpls.2018.00853
Descripción
Sumario:This work explores whether the natural abundance of N isotopes technique could be used to understand the movement of N within the plant during vegetative and grain filling phases in wheat crop (Triticum aestivum L.) under different fertilizer management strategies. We focus on the effect of splitting the same N dose through a third late amendment at flag leaf stage (GS37) under humid Mediterranean conditions, where high spring precipitations can guarantee the incorporation of the lately applied N to the soil-plant system in an efficient way. The results are discussed in the context of agronomic parameters as N content, grain yield and quality, and show that further splitting the same N dose improves the wheat quality and induces a better nitrogen use efficiency. The nitrogen isotopic natural abundance technique shows that N remobilization is a discriminating process that leads to an impoverishment in (15)N of senescent leaves and grain itself. This technique also reflects the more efficient use of N resources (fertilizer and native soil-N) when plants receive a late N amendment.