Accumulation and reduction of nitrate in cereal plants dependent on N supply |
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Authors: | Eberhard Przemeck Martin Kücke |
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Institution: | (1) Institute of Agricultural Chemistry, Georg-August-University, D-3400 Göttingen, FRG |
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Abstract: | Summary In pot experiments the NO
3
–
accumulation and the occurrence of nitrate reductase (NR) capacity of wheat plants were investigated depending on late N applications at tillering, shooting and heading. NO
3
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is preferentially accumulated in the stems, while NR dominates in the leaves. NO
3
–
accumulation is enhanced by late N treatments especially if N supply at seeding is sufficient. NR capacity of the plants is stimulated by late nitrogen supply, but its increment rates decrease with increasing NO
3
–
accumulation. |
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Keywords: | Nitrate accumulation Nitrate reductase Nitrogen fertilizing Wheat |
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