| Using convinientable photosynthetic analyzer to study changes of photophysiological characteristics of different genotype malting barley, and analysed the correlation degree among photophysiological characteristics and yield and quality. The results showed that from jointing stage to heading and flowering stage was the crucial period for malting barley, the change of photophysiological characteristics not only effected the yield formation, but also effected the content of grain protein in the stage, the correlation degree of 1000 -grain weight and grain protein content was the most closely (r =0.7396), the correlation degree of the photophysiological characteristics of heading and flowering stage and yield reached 0.8691, and the photophysiological characteristics of jointing stage to heading and flowering stage had great influence on grain quality. |
