Chinese Agricultural Science Bulletin ›› 2012, Vol. 28 ›› Issue (20): 131-135.doi: 10.11924/j.issn.1000-6850.2012-1724
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To solve the problems of Argopecten irradians concentricus breeding process, the inter-specific hybridization was used to meliorate its germplasm. Inbred Argopecten purpuratus (Z) and Argopecten irradians concentricus (M) cohorts and their reciprocal crossbred cohorts were constructed and their morphological parameters were measured and analysed. The results showed that each cohort’s rate of fertilization and hatchability were above 90%, and MZ had the highest fertilization, MM had the highest hatchability. In the larval and adult stage, the growth speed of hybrid cohort (MZ) was greater than the inbred cohorts (MM and ZZ). In the larval stage, the daily growth rates of shell height and shell length were 6.58 μm/d and 6.67 μm/d. In the adult stage, the daily growth rates of shell height, shell length and whole weight were 0.33 mm/d, 0.36 mm/d and 0.23 g/d. The average shell height, shell length and whole weight of the hybrids were 24.65%, 27.40% and 85.14% larger than that of the pure-bred bay scallops, indicating a significant heterosis in the hybrids.
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URL: https://www.casb.org.cn/EN/10.11924/j.issn.1000-6850.2012-1724
https://www.casb.org.cn/EN/Y2012/V28/I20/131