EFFECT OF NITROGEN FERTILIZER ON NITROGEN FRACTIONS AND AMINO ACID COMPOSITION OF SPRING WHEAT

1979 ◽  
Vol 59 (2) ◽  
pp. 299-305 ◽  
Author(s):  
S. DUBETZ ◽  
E. E. GARDINER ◽  
D. FLYNN ◽  
A. IAN DE LA ROCHE
Keyword(s):  
Amino Acid ◽  
Amino Acid Composition ◽  
Acid Composition ◽  
Spring Wheat ◽  
N Fertilizer ◽  
Protein Fractions ◽  
N Application ◽  
Total N ◽  
Hard Red Spring Wheat ◽  
Nitrogen Fractions

Grain from hard red spring wheat (Triticum aestivum ’Neepawa’) grown with nine rates of N fertilizer (0–400 kg/ha) was analyzed for total N, non-protein N (NPN), and amino acids. In addition, the amino acid compositions of the various soluble protein fractions were determined. The percentages of total N, NPN, and protein N of the grain increased with each 50-kg increment of N up to the 150-kg rate. The proportions of glutamate, proline, and phenylalanine in the seed increased whereas threonine, serine, glycine, alanine, and valine decreased with the first three or four increments of N fertilizer. With increasing N content in the seed, the proportions of albumin, globulin, and glutenin 2 decreased while the proportions of gliadin and glutenin 1 increased. The various protein fractions differed from each other in amino acid composition but the amino acid composition of each fraction was not influenced significantly by N application.

NATURE OF PROTEINS IN TRITICALE AND ITS PARENTAL SPECIES: I. SOLUBILITY CHARACTERISTICS AND AMINO ACID COMPOSITION OF ENDOSPERM PROTEINS

1970 ◽  
Vol 50 (1) ◽  
pp. 9-14 ◽  
Author(s):  
C. H. CHEN ◽  
W. BUSHUK
Keyword(s):  
Amino Acid ◽  
Durum Wheat ◽  
Amino Acid Composition ◽  
Acid Composition ◽  
Spring Wheat ◽  
Water Soluble ◽  
The Other ◽  
Hard Red Spring Wheat ◽  
Endosperm Proteins ◽  
Spring Wheat Cultivar

Solubility characteristics and amino acid composition of the endosperm proteins of one line of Triticale, its durum wheat and rye parent cultivars, and one cultivar of hard red spring wheat were compared. Quantitative distribution of the soluble protein fractions and amino acid compositions showed that the proteins of Triticale are intermediate in these properties between analogous properties of the proteins of its durum wheat and rye parents. The major differences between the hard red spring wheat and the other three species were its lower content of water-soluble proteins and higher content of insoluble or gluten proteins. This appears lo be the main reason for the superior breadmaking quality of the hard red spring wheat cultivar compared with the other species used in this study.

scholarly journals Amino acid composition of Lagenaria siceraria seed flour and protein fractions

2010 ◽  
Vol 47 (6) ◽  
pp. 656-661 ◽  
Author(s):  
Moriyike Esther Ogunbusola ◽  
Tayo Nathaniel Fagbemi ◽  
Oluwatooyin Faramade Osundahunsi
Keyword(s):  
Amino Acid ◽  
Amino Acid Composition ◽  
Acid Composition ◽  
Protein Fractions ◽  
Lagenaria Siceraria ◽  
Seed Flour

Amino acid composition of xylem and phloem sap varies in canola genotypes differing in nitrogen- and sulfur-use efficiency

2011 ◽  
Vol 62 (3) ◽  
pp. 198 ◽  
Author(s):  
Tatjana Balint ◽  
Zdenko Rengel
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Amino Acid Composition ◽  
Acid Composition ◽  
Xylem Sap ◽  
Vegetative Stage ◽  
Total N ◽  
Phloem Sap ◽  
Use Efficiency ◽  
N Use

There is little information on amino acid composition of xylem and phloem sap in canola genotypes differing in use efficiency of nitrogen (N) and/or sulfur (S). Four canola genotypes with either high or low N- and/or S-use efficiency indices were grown in a glasshouse using deficient or adequate N and/or S supply. Xylem sap was obtained by vacuum extraction 46 days after sowing. Phloem sap was collected via bleeding from the petioles of the maturing siliques 120 days after sowing. Among the genotypes, Wesway (N-use efficient) had the highest concentrations of total N, glutamine (235 mmol/L), and asparagine (14 mmol/L) in the xylem sap in the vegetative stage. In contrast, genotype Westar (classified previously as N-use inefficient) had the highest concentrations of most amino acids in the phloem sap among genotypes grown at deficient N supply. Compared with the other tested genotypes, Surpass 402 CL (S-use efficient) had a higher concentration of S, and Karoo (S-use inefficient) had higher concentrations of glutamate and methionine, in the xylem sap in the vegetative stage. Similarly, Karoo had a higher concentration of methionine under adequate S supply and of glutamate under deficient S in the phloem sap at maturity. In conclusion, in canola phloem sap, the most important amino acid for N transport is glutamine, and for S transport methionine and the glutathione-precursor glutamate. It does not appear there is a relationship between differential N- or S-use efficiency of canola genotypes and the concentration of N- or S-transporting amino acids in the phloem sap.

scholarly journals Protein fractions, amino acid composition and antinutritional constituents of high-yielding cowpea cultivars

2010 ◽  
Vol 23 (1) ◽  
pp. 54-60 ◽  
Author(s):  
Ilka Maria Vasconcelos ◽  
Fernanda Maria Machado Maia ◽  
Davi Felipe Farias ◽  
Claudio Cabral Campello ◽  
Ana Fontenele Urano Carvalho ◽  
...  
Keyword(s):  
Amino Acid ◽  
Amino Acid Composition ◽  
Acid Composition ◽  
Protein Fractions ◽  
Cowpea Cultivars
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