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几种鲟鱼基因组大小、倍体的特性及鲟形目细胞进化的探讨
Authors
张四明,晏勇,邓怀,汪登强,危起伟,吴清江
Publication date
1 January 1999
Publisher
Abstract
采用Feulgen-显微分光光度计方法,以鸡红细胞为标准DNA(3.22pg/2C)测定了长江白鲟、达氏鲟、中华鲟、史氏鲟和北美匙吻鲟的体细胞基因组大小(DNA含量)。结果表明,上述五种鲟鱼DNA含量分别为4.11、8.26、9.07、6.07和3.96Pg。长江白鲟和北美匙吻鲟均属于四倍体鱼类,分布在长江水系的中华鲟和达氏鲟两种鲟属鱼类为八倍体类型。史氏鲟初步判断为八倍体。据分析可能存在四倍体的类型。根据所得到的结果并结合已发表的DNA含量和染色体资料,分析了鲟形目鱼类在细胞遗传上的进化特点。鲟形目鱼
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Institute of Hydrobiology, Chinese Academy Of Sciences
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oai:ir.ihb.ac.cn:152342/4044
Last time updated on 15/03/2018