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关联分析定位水稻第4号染色体的芒性基因并结合连锁分析精细定位Awn4.1 被引量:4

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摘要 芒性是水稻一个重要的驯化相关性状,但目前还没有其精细定位及关联分析的报道.利用303份栽培稻微核心种质材料和一个200株的BC5F2分离群体,考察其芒性表现和基因型,通过关联分析和连锁分析相结合的方法定位水稻第四号染色体的芒性基因.首先,运用logistic回归进行标记与性状的初步关联分析,在第4号染色体上发现了5个关联位点,包括了前人所发现的所有位点.然后,在其中一个位点Awn4.1的区间内加密标记,通过连锁分析与关联分析相结合的策略将芒基因Awn4.1精细定位在330kb的区间内,为克隆芒基因Awn4.1打下基础.结果表明,利用核心种质材料,结合连锁分析与关联分析方法能够更加高效和准确地定位水稻基因.
出处 《科学通报》 EI CAS CSCD 北大核心 2010年第27期2777-2781,共5页 Chinese Science Bulletin
基金 国家重点基础研究发展计划(2010CB125904 2004CB117201) 国家高技术研究发展计划(2006AA10Z158)资助项目
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同被引文献69

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