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| Hybrid Technology of Discus Abalone Haliotis discus hannai and H .discus discus |
| ZHAO Chun-nuan,YAN Zheng-lin |
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Abstract The crossbreeding between Dalian population of Haliotis discus hannai and Japanese population of H .discus discus was carried out ,and the hybrid seedlings were used for further seeding production . The results showed that the reciprocal cross had a lower fertilization rate and hatching rate compared with the inbreeding group ,but the survival rate of the juveniles was higher than the inbreeding group ,0 .34%higher .They had different shell length ,higher in the reciprocal cross was than in the inbreeding group , the maximum of 2 .01 cm .When the H .discus hannai and H .discus discus were taken as parents for aba-lone seeding production ,20 ,207 ,500 abalones were obtained (average shell length 2 .01 cm)after 160 days later at a rate of 4345 .7/m2 .The findings indicate that this way of intraspecific hybrization can improve and optimize abalone germplasm .
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Received: 25 October 2014
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