F1 hybrid electrophoregrams predicted and demonstrated by their parent inbreds
--T. M. Song, D. H. Zheng, Q. S. Yang and G. H. Song

Figure 1 shows the electrophoregrams of inbred Gy237, 478, hybrid Gy237x478, 478xGy237 and the electrophoregram from mixed extraction solution of inbred Gy237 and 478. From this plate, it could be found that at least 8 bands were obviously different between inbred Gy237 and 478 in ö and  groups. The band number of the F1 is just equal to that of the common bands plus the specific bands of the two parents. The band patterns of reciprocal crosses were exactly the same. It indicated that the number of electrophoretic bands was a hereditary trait controlled by nuclear genes. Preliminary conclusions drawn from the data are: 1) presence of bands is dominant over absence; 2) strong band is dominant over weak band. Another interesting phenomenon we have found is that electrophoregrams of mechanically mixed extraction solution of two inbreds were equal to that of their F1 hybrid. From these results, we could easily predict the F1 electrophoregram from that of their two parents, and also could easily demonstrate the F1 electrophoregram from that of the mixed extraction solution of their parents.

Figure 1. Electrophoregrams of corn hybrids and their parent inbreds. 1) Gy237, 2) Gy237x478, 3) 478xGy237, 4) Gy237+478, 5) 478. 

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