ABSTRACT
The experiment was conducted at Beijing Xiaotangshan Precision Agriculture Experimental Base, in Changping district, Beijing (40°10.6fN,116°26.3,E) from 2001-2002 and 2002-2003. Experimental data from years 2001-2002 were used to calibrate the grain quality evaluation models; the data from years 2002-2003 were used for the validation of the established grain quality evaluation models
Grain protein indicators such as grain hardness, protein content, wet gluten content, dry gluten content, and sedimentation value. Grain starch indicators such as flour peak viscosity, trough, breakdown, final viscosity, and peak time. The correlation coefficients among grain hardness, flour final viscosity, and flour peak time were significantly positive, with correlation coefficients of 0.396 and 0.498. Correlation coefficients between grain sedimentation value and flour final viscosity, flour peak time and flour trough were highly significantly negative, which were respectively -0.616, -0.652, and -0.399. They did not reach robust correlations at 5% significance level among protein content, dry gluten content (grain protein indicators), flour trough, flour breakdown, flour final viscosity, and flour peak time.
