Abstract:

In order to understand the selection effects of maize hybrids by different trail designs, the contrast studies on the yield and plant-type appearances of maize hybrids were conducted in this article. The results demonstrated that the high significant correlation at 1% level exists between the variety trial and the single-plant trial, and that the plant-type appearances in the two environments are more consistent. Some harmful plant-type traits appeared amply in single-plant trial, so it is more easy to choose elite hybrids and to eliminate worthless hybrids. Meanwhile, the yield appearance in identical trial has not significant correlation with that in variety trial. Using single plant design for yield test of maize hybrid can not only resolves the problem of disturbing from near lines each other, but also save many experimental soil, work and other pays.