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Effect of the nitrogen, phosphorus, potassium and magnesium nutrition of potato plants on the content of free amino-acids and on the amino-acid composition of the protein of the tubers



Effect of the nitrogen, phosphorus, potassium and magnesium nutrition of potato plants on the content of free amino-acids and on the amino-acid composition of the protein of the tubers



Plant & Soil, 7: 135-166



Paper chromatography of extracts from potato tubers grown under controlled manurial conditions showed the amino-acid composition of the soluble non-protein fraction, but not of the protein hydrolysates, to vary considerably under different mineral nutrition. High N content of potato caused by ample N and deficiency of P or K increased the proportion of amides, arginine and, except in P-deficient tubers, of y-aminobutyric acid. Asparagine and glutamine were associated with N storage.

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Accession: 014027094

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DOI: 10.1007/bf01343724


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