ZHANG Da-long1,DU Rui1, NIE Zhu-lan1, YANG Zhen-hua1,LUO Wei1,YI Shao-kui1, GAO Ze-xia1, WANG Wei-min1,CHEN Bo-xiang2
1. Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, College of Fisheries, Huazhong Agricultural University, Wuhan 430070,China; 2.Bairong Fisheries Certified Seed Company Limited of Hubei，Huanggang 438800,China
Abstract: Wild broodstocks ofMegalobramaamblycephala(T) collected from Langzi Lake in Ezhou, Hubei Province,M.terminalis(S)collected from Qiantang River original seed farm in Zhejiang Province,M.hoffmanni(H) collected from Longxi River in Luzhou, Sichuan Province, andM.pellegrini(G)in Zhaoqing Xijiang, Guangdong Province were used for a variety of hybrids and inbred as follows: T♀×T♂, T♀×H♂, T♀×S♂, T♀×G♂, S♀×S♂, S♀×T♂, S♀×G♂, H♀×H♂, and H♀×T♂. Fertilization rate, hatching rate and survival rate were relatively high in the hydrids, in which the larvae were reared for 45 days, indicating that it was possible to conduct hybridization withinMegalobramasp., especially the hydrids reciprocal crossed betweenM.amblycephalaandM.pellegrinishowing heterosis in both body length and body weight, not in the body height. No heterosis was found in the reciprocal crossed hybrid betweenM.amblycephalaandM.terminalis. It is uncertain that there is heterosis in the reciprocal crosses betweenM.erminalisandM.hoffmanni.
2014, Vol. 29 
