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Nitrogen Remobilization during Grain Filling in Wheat

Genotypic and Environmental Effects

^a Unité Mixte d‘Agronomie, INRA-INAPG, BP01, 78 850 Thiverval-Grignon, France
^b Unité de Recherche en Génétique et Ecophysiologie des Légumineuses INRA, 17 rue de Sully, BP 86510, 21 065 Dijon, France
^c INRA Unité Mixte d'Agronomie, INRA-INAPG, BP01, 78 850 Thiverval-Grignon, France

View larger version (15K): [in a new window]   Fig. 1. Relationship between the amount of nitrogen remobilized and nitrogen uptake at flowering estimated for all genotypes in the environments without limiting factors during the grain filling period (experiments in 2001 and 2002).

View larger version (14K): [in a new window]   Fig. 2. Expected amount of remobilized N estimated from the general model (determined in Fig. 1) versus observed amount of remobilized N, in environments with high disease pressure. The line corresponds to the 1:1 bisecting line. Disease-resistant genotypes such as Oratorio (ORT) and Hynoprécia (HYP) and susceptible-genotypes such as Récital (REC) and Soissons (SOI) are identified.