The effect of varying nitrogen supplies on the content of amino acids in wheat grain

Larsen, Inga; Nielsen, J⊘rgen Dissing

doi:10.1007/bf02232906

Cited by 17 publications

(9 citation statements)

References 14 publications

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“…Our data indicate that this may be also true for the aromatic amino acids such as phenylalanine, tyrosine or tryptophane in wheat grians. These free aromatic amino acids react with Folin‐Ciocalteu reagent and, thus, contribute to the TPC of the wheat grain ( Larsen and Dissing Nielsen , 1966). This could be a reason for increasing TPC in the first fraction at higher N supply.…”

Section: Discussionmentioning

confidence: 99%

Nitrogen fertilization and maturity influence the phenolic concentration of wheat grain (Triticum aestivum)

Stumpf

Yan

Honermeier

2015

J. Plant Nutr. Soil Sci.

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This work investigated the influence of N fertilization and grain maturity on total phenolic concentration (TPC) of wheat caryopses. A pot experiment was conducted, using soft spring wheat (Triticum aestivum cv. Thasos) which was treated with four different amounts of nitrogen (0.25–2.00 g N pot−1) and harvested at three different development stages (medium milk stage, late milk stage, and dough maturity). Phenolic compounds were extracted and analyzed as total phenolic concentration in three discrete fractions: free soluble, conjugated soluble and insoluble bound forms. TPC of free phenolic compounds rose with increasing N supply while TPC of conjugated soluble phenolics decreased at the same time. Insoluble phenolics were less affected by N treatment. Total phenolic concentration also changed with the development stage of caryopses and reached a peak at the late milk stage.

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Section: Discussionmentioning

confidence: 99%

Nitrogen fertilization and maturity influence the phenolic concentration of wheat grain (Triticum aestivum)

Stumpf

Yan

Honermeier

2015

J. Plant Nutr. Soil Sci.

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“…Lower germination was usually accompanied by a later germination. Higher nitrogen applications to cereals can alter the amino acid composition of the grain protein (Larsen & Dissing Nielsen, 1966) usually increasing the deposition of storage proteins and thereby reducing the proportion of proteins typical of the embryo and aleurone layer. That final germination is reduced by lower nitrogen levels and that germination is delayed when nitrogen application is limited to only 50 kg N ha-' suggests that at such low nitrogen applications the enzymes (or their precursors) involved in germination are present only in limiting quantities.…”

Section: Discussionmentioning

confidence: 99%

The effect of parent plant nutrition on seed size, viability and vigour and on germination of wheat and triticale at different temperatures

Naylor

1993

Annals of Applied Biology

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Seed was obtained from two adjacent trials of wheat (cv. Avalon) and triticale (cv. Lasko) harvested in 1990. The treatments consisted of factorial combinations of five levels of spring nitrogen (50, 100, 150, 200 and 250kg N ha-') with fungicide treatments designed to control foliar diseases. Seed was graded by size into different fractions.Application of foliar fungicides to the parent plant increased the proportion of large seed in wheat but not in triticale. Fungicide application had no effect on seed vigour (quantified as the value of Ki after controlled deterioration), final germination, median germination time (tso) or rate of germination.Parent plant nutrition altered the proportions of seed in different size categories in triticale and wheat. In laboratory germination tests, final germination of wheat increased with seed size. Large (> 3.0 mm diameter) wheat seed from plots receiving 50 kg N ha-' had a lower final germination than large seed from plots which had received greater amounts of nitrogen, but tS0 and K, were similar for all nitrogen levels. In triticale, the higher the seed weight, the higher the final germination, the faster the rate and the higher the Ki. Final germination, t50 and Ki, were all positively correlated with the amount of nitrogen received by the parent plants.Parent plant nutrition had no effect on the response to temperature of final germination, t50, or rate of germination for large or small seeds of both wheat and triticale.

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“…The additional nitrogen fertilization increased the relative amount of glutamic acid at the expense of lysine and arginine. Larsen andNielsen 1966, Pessi et al 1971). The effect of irrigation was almost reverse to that of nitrogen fertilization.…”

Section: Methodsmentioning

confidence: 99%

“…Irrigation decreases the contents of various nutrients in wheat and especially that of proteins, but an increase in fertilization can eliminate this disadvantage and simultaneously stimulate the effect of irrigation on the grain yields (Kaila and Elonen 1970). However, in several investigations it has been found that, as a consequence of an intense nitrogen fertilization, the biological quality of wheat protein may be weakened (Bodo 1961, Larsen and Nielsen 1966, Aykroyd and Doughty 1970. There is very little corresponding information about irrigation.…”

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confidence: 99%

Influence of irrigation and nitrogen fertilization on the amino acid composition of spring wheat

Elonen

Aho

Koivistoinen

1972

AFSci

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Abstract. Sprinkler irrigation on clay soils in southern Finland decreased the protein content of spring wheat flour in five field experiments in the years 1967-70, by 16 ± 4 per cent on an average. The amino acid composition, however, was improved, because the proportion of lysine was increased by 6 ± 4 %. Accordingly, the content of lysine in flour was decreased by irrigation only by 10 i 5 %. An increase of fertilizer nitrogen from 68 to 144 kg/ha increased the protein content of wheat flour by 19 ± 5 %, but the proportion of lysine in the amino acid composition decreased by 9 ± 4 %. Therefore, the lysine content in flour was increased by nitrogen fertilization only by 8 ± 5 %. It seemed as if urea and ammonium nitrate limestone would have had about the same effect on the quantity and quality of wheat protein. As a consequence of the reversed influences of irrigation and nitrogen fertilization on the wheat protein it was possible, by means of irrigation and an additional nitrogen fertilization, to produce 65 per cent higher grain yields without any noteworthy changes in the contents of protein or amino acids.

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The effect of varying nitrogen supplies on the content of amino acids in wheat grain

Cited by 17 publications

References 14 publications

Nitrogen fertilization and maturity influence the phenolic concentration of wheat grain (Triticum aestivum)

Nitrogen fertilization and maturity influence the phenolic concentration of wheat grain (Triticum aestivum)

The effect of parent plant nutrition on seed size, viability and vigour and on germination of wheat and triticale at different temperatures

Influence of irrigation and nitrogen fertilization on the amino acid composition of spring wheat

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