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海南沼虾ITS-1序列分析

文献类型: 中文期刊

作者: 姚建华 1 ; 傅洪拓 1 ; 龚永生 2 ; 吴滟 2 ;

作者机构: 1.南京农业大学无锡渔业学院

2.中国水产科学研究院淡水渔业研究中心

关键词: 海南沼虾;ITS-1;SSR;微卫星

期刊名称: 中国农学通报

ISSN: 1000-6850

年卷期: 2009 年 25 卷 13 期

页码: 273-277

收录情况: 北大核心

摘要: 为了了解海南沼虾遗传方面信息,利用ITS-1分子标记技术对珠江海南沼虾群体作了研究。研究结果表明:①其ITS-1片段在1700~1900bp之间,较日本沼虾短;②其碱基含量变化范围为:27%~30%(A),27%~31%(G),14%~16%(C),43%~46%(G+C);③其ITS-1序列中包含着非常丰富的SSR序列信息,具体为(AG)n,(GA)n,(AGT)n,(AGC)n,GCA)n重复,在个体中出现的比例分别为100%,100%,25%,12.5%,12.5%。(AG)n,(GA)n是多态位点;④BLAST比对结果表明,海南沼虾同日本沼虾和刀额新对虾都有较高的同源性。此研究结果在一定程度上填补了海南沼虾ITS-1方面研究的空白,同时也为海南沼虾后续研究提供了理论参考。

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