Evaluation of Physical Characteristics of Typical Maize Seeds in a Cold Area of North China Based on Principal Component Analysis

The physical properties of maize seeds are closely related to food processing and production. To study evaluate the characteristics seeds, typical in a cold region North China were used as test varieties. A variety agricultural material benches built measure seeds’ parameters, such thousand-grain weight, moisture content, triaxial arithmetic mean particle size, coefficient static friction, rolling angle natural repose, restitution, stiffness coefficient. Principal component cluster comprehensive analyses simplify characteristic parameter index judge score seeds. results showed that there significant differences main parameters varieties this area, different degrees correlation among characteristics. analysis was extract first three principal factors, whose cumulative contribution rate over 80%, representing most information original eight had good representativeness objectivity. According results, classification standard evaluation 15 kinds determined, appropriate evaluations conducted. clustered into four groups by analysis, each different. This provides new idea for materials, method screening raw materials.