Differential display of mRNA between hybrid F1 and its parental inbred lines in maize （Zea mays L.）

Heterosis is a universal biological phenomenon in living things. It has been utilizedextensively in crop breeding, the improvement of fish and the breed of domestic animal fora long time. Great success has been achieved in practical production of the utilization ofheterosis, but in theory, we have known little about the mechanism of heterosis. At thebeginning of this century, Bruce et al. proposed the dominance hypothesis to explain the