中国水产科学Issue(2)：308-315,8.DOI:10.3724/SP.J.1118.2013.00308
海湾扇贝南部亚种自交家系选育及其 Kung 育种值评价
Breeding of a self-fertilizing family and Kung breeding value evaluation of Argopecten irradians concentricus (Say)
摘要
Abstract
The bay scallop Argopecten irradians concentricus was introduced to China from South America in 1991. The individuals chosen for this experiment were the F3 offspring of the largest scallop, in terms of shell height, bred from the years 2005 to 2007. Twelve adults were randomly selected from this population with a se-lection pressure of 5%, and 12 self-fertilizing, hermaphrodite families were established. The control group (L0) was produced by mixed crossing of the F3 offspring of this scallop. Kung breeding and comprehensive evaluation values were evaluated in the self-fertilizing family and the control group by inspecting indices such as growth and survival of the offspring. The aim was to breed excellent self-fertilizing scallops and provide the material basis for genetic improvement of the stock. The results showed that there were no significant differences between the fer-tilization rate of the self-fertilizing families and the control group. However, the hatching rates were significantly higher(P<0.05), and families B3 and C2 were the top two, then L0 followed. In the larva stage, the daily shell length growth was significantly higher in B3 and C2 than in the control group, but was significantly lower in the other self-fertilizing families (P<0.05). The survival rates of B3 and C2 were significantly higher than the control group, yet they were significantly lower than the control up to 4 months old (P<0.05). During this period, the self-fertilizing families B3 and C2 displayed significantly higher growth rates than the others in terms of shell height, shell width, and body weight (P<0.05). The comprehensive evaluation and breeding value of the four traits of the different family lines were B3 >C2 >L0 >A3 >B4 >A1 >C4 >B1 >A2 >B2 >C3 >C1, which proved that B3 and C2 were two excellent self-fertilizing families. In the 12 families, self-fertilization depression occurred to some extent in nine, one failed and two (B3, C2) exhibited superior growth and survival. We conclude that it is feasible to es-tablish high quality self-fertilizing families with large-size shell height, improving breeding efficiency, and short-ening the breeding period.关键词
海湾扇贝南部亚种/自交家系/选育/Kung 育种值/综合评定值Key words
Argopecten irradians concentricus Say/self-fertilizing family/breeding/Kung breeding value/comprehensive evaluation value分类
农业科技引用本文复制引用
刘志刚,章启忠,朱晓闻,黄丽萍,陶后全,白成..海湾扇贝南部亚种自交家系选育及其 Kung 育种值评价[J].中国水产科学,2013,(2):308-315,8.基金项目
广东省科技厅产学研项目(2009B090300232) （2009B090300232）
广东省教育厅项目(GCZX-A0909) （GCZX-A0909）
