青贮玉米生物产量相关性状分析OA

Biological yield is an important evaluation index for silage corn. This paper used methods such as correlation analysis,principal component analysis,cluster analysis,discriminant analysis and ridge regression analysis to analyze 10 agronomic traits related to the biological fresh weight of 37 silage corn varieties in southwestern China. The results showed that the correlation between various agronomic traits was different,and there was a significant error in analyzing the correlation between individual traits and biological fresh weight. The cumulative contribution rate of the four principal component factors in principal component analysis was 78.106％. Cluster analysis could classify the tested varieties into four categories. Discriminant analysis showed that the probability of judgment was 89.19％. A yield evaluation model for silage corn was established through ridge regression analysis.