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Accumulation of dry matter and nitrogen by grains in different positions of the wheat ear as influenced by shading and defoliation


, : Accumulation of dry matter and nitrogen by grains in different positions of the wheat ear as influenced by shading and defoliation. Australian Journal of Biological Sciences 25(4): 657-668

In glasshouse trials, the order of priority for supply of assimilate and N between individual grains of the wheat ear was studied by determining their accumulation of DM and N when the supply was varied by shading and defoliation, alone or in combination, from 2 weeks after anthesis. The production of assimilates by untreated plants was surplus to the requirements of grain filling. Treatments influenced the distribution of DM so as to minimize effects on grain.

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