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淇河鲫与不同品系锦鲤杂交F1代遗传多样性研究

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摘要 以淇河鲫为母本,红色、白色、黄色和黑色4品系锦鲤为父本,杂交生产F1代,淇河鲫自交作为对照。运用PCR技术扩增了父母本及F1子代的线粒体细胞色素氧化酶亚基Ⅰ(COⅠ)基因片段。用ClustalX软件对序列结果进行统计和分析,采用邻接法构建分子系统树。结果表明,10种鱼COⅠ片段的平均GC含量为44.5%,AT含量为55.5%。依据Kimura-2-parameter模型,亲本间遗传距离最大的是淇河鲫与红色锦鲤(0.1374),其次是淇河鲫与黄色锦鲤(0.1367),与白色和黑色锦鲤的遗传距离相当;杂交子代中,以淇河鲫与红色锦鲤杂交所得子代与淇河鲫的遗传距离最小,最大的是白色锦鲤和淇河鲫杂交子代。
出处 《江西水产科技》 2014年第1期15-20,36,共6页 Jiangxi Fishery Science and Technology
基金 河南省重点科技攻关项目(132102110135) 河南省水产学重点学科资助
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