Utilization of Grey Correlation Degree Analysis on Synthetic Evaluation of Hybrid Maize in Hubei Province

With the relate analytical method in the grey system theoy,26 new varieties and CK was analysed in the corn regional test in Hubei in 2006.The results showed that the order of the effects of vary traits on the yield was lodging resistance,ear height,ear yield rate,plant height,rows per ear,thousand kernel weight,growth period,ear length,ear thicks,weight per ear,kernel per row.It indicated that in the course of maize breeding,it is important to pay attention to the selection of lodging resistance,ear yield rate,thousand kernel weight,growth period,ear length and rows per ear.