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作 者:赵洋[1] 包振民[1] 毕克[1] 黄晓婷[1] 王珏[1] 胡景杰[1] 杨爱国[2]
机构地区:[1]中国海洋大学生命科学与技术学部海洋生物遗传学与种质工程实验室,山东青岛266003 [2]中国水产科学研究院黄海水产研究所,山东青岛266071
出 处:《海洋学报》2006年第1期100-105,共6页
基 金:国家"863"资助项目(2001AA6201062003AA603022);山东省优秀中青年科学家科研奖励基金资助项目(01BS10)
摘 要:采用滴片法制片-吉姆萨染色对雌性虾夷扇贝(Patinopecten yessoensis)与雄性栉孔扇贝(Chla-mys farreri)杂交子代及其双亲的核型进行了研究,报道了在扇贝杂交过程中产生的特殊的细胞遗传学现象,结果表明,栉孔扇贝染色体核型2n=38=6m+10sm+22st;虾夷扇贝染色体核型2n=38=6m+10sm+16st+6t;两者杂交子代染色体数目2n=38,但其染色体组型不符合预期型,不是简单地由两个亲本各自一套染色体组型组合而成,呈现出复杂的形态多态性,端部着丝点染色体明显增多.The karyotypes of hybrid scallop (hybridizing cross the female Patinopecten yessoensis with the Chlarnys farreri) and their parents were studied and compared by colchine hypotonic air drying-Giemsa staining. Some cytogenetic specificities were detected. The karyotype of C. farreri was found to be 2n= 38=6m+10sm+22st, while the karyotype of P. yessoensis was 2n=38=6m+10sm+16st+6t. The chromosome number of the hybrid is 2n=38, however, the karyotypes are quite different from the expectative types,much more number of telocentric chromosomes appear. Moreover, obvious polymorphism of karyotypes was examined in the hybrids izatims.
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