Modeling Grain Nitrogen Accumulation and Protein Composition to Understand the Sink/Source Regulations of Nitrogen Remobilization for Wheat From: Plant Physiology | Date: December 1, 2003| Author: Jamieson, Peter D; Porter, John R; Triboi, Eugene; Martre, Pierre | Copyright American Society of Plant Physiologists Dec 2003. Provided by ProQuest LLC.Copyright information

A functional explanation for the regulation of grain nitrogen (N) accumulation in cereal by environmental and genetic factors remains elusive. Here, new mechanistic hypotheses of grain N accumulation are proposed and tested for wheat (Triticum aestivum). First, we tested experimentally the hypothesis that grain N accumulation is mostly source regulated. Four contrasting cultivars, in terms of their grain N concentrations and yield potentials, were grown with non-limiting N supply. Grain numbe...

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