Effects of different soils and altitudes on the composition of amino acids in foxtail millet Effect of Long-term Fertilization on the Nutritional Quality of Wheat Protein in Dryland of Loess Plateau STUDIES ON THE QUALITY APPRECIATION AND CLASSIFICATION OF WHEAT VARIETIES IN SHAANXI PROVINCE Effects of longterm rotation on the nutritional quality of wheat grain protein on dryland of Loess Plateau, Northwest China. Effects of nitrogen fertilization on activities of nitrogen metabolism related enzymes and grain protein quality of wheat Effects of Water and Nitrogen Treatment on Yield and Protein Quality in Strong Gluten Wheat Jimai 20