Study on the Hereditary Characteristics of the F_1 Hybrid of Blunt Snout Bream (Megalobrama amblycephala Yih) by Crossing the Fish from Yunihu Lake and Liangzihu Lake

Blunt snout bream (Megalobrama amblycephala Yih) is a freshwater cultivated fish with good quality. However under cultivation, if it reproduce successively from generation to generation for long time ,it will be resulted in degeneration of specific features, its targets of economic characteristic will be decreased. By crossing of the selected good variety parents respectively from Yunihu Lake and Liangzihu Lake, the hybrid F_1 and backcross B_1 have been obtained in present experiment. It is found that both hybrid F_1 and backcross B_1 have good advantage on the growth,the contents of meat and crude protein are relevantly increased as compared with that of their parents ,the economic characteristics are better. The result of analysis of serum protein electrophoresis shows that there are different bonds between hybrid F_1 and the parents.