Effect of sulfur fertilizer on amino acid concentration of wheat grain

The effects of different sulfur rates on amino acid concentration and gluten content of wheat grain were investigated using two wheat varieties in sulfurdeficient field. The result showed that sulfur rate affected the accumulation of N and S in wheat plant, but hardly affected the gluten content of grains both wheat varieties. Amino acid analysis showed application of sulfur fertilizer increased the concentration of total amino acid and aspartic acid, threonine, serine, glutamic acid, glycine, leucine, phenylalanine and especially sulfurcontaining amino acid methionine of Beinong 10 wheat grain. The concentration of sulfurcontaining amino acid cysteine of wheat grain Jingdong 8 increased by 7%～28%. 