利用SSR和SFP标记分析不同抗瘟性水稻品种的多态性
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“973” 项目 (2006CB101904); “948” 项目,(2006-G61);NSFC 项目 (30871335) 和湖南省教育厅科学研究项目 (20060537004)


Polymorphism Analysis of Rice Varieties Xiangzi3150 and CO39 Using SSR and SFP Markers
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    摘要:

    摘 要:利用914对引物(848对SSR引物和66对SFP引物)对籼型广谱持久抗瘟水稻品种湘资3150和籼型感病品种CO39的基因组多态性进行了研究。结果表明,880对引物(含814对SSR引物和 66对SFP引物)有扩增产物,扩增率为96.39%;共筛选到220对多态性引物,多态性检出率为24.10%;SSR标记的多态性检出率为23.61%,低于SFP标记的多态性检出率(30.3%);不同染色体间多态性检出率差异较大,第10染色体的供试引物多态性检出率最高,为30%;第9染色体的多态性检出率最低,为14.55%;不同碱基数目基序的标记间多态性检出率也有较大差异,其中4碱基重复型的多态性检出率最高,为27.96%,其后依次为2碱基重复型、复合型、3碱基重复型和单碱基重复型。因此,湘资3150和CO39多态性较丰富,适用于构建抗瘟性基因定位群体。 关键词:水稻;SSR;SFP;多态性;稻瘟病抗性

    Abstract:

    Abstract:A total of 914 markers(848 SSR and 66 SFP)were used to survey the genomic polymorphism between the blast resistant rice variety Xiangzi3150 and the blast susceptible variety CO39. The results showed that expected bands were amplified from 96.39% of 880 markers (814 SSR and 66 SFP). Among them, 220 polymorphic markers were identified, which counted 24.10% of the total markers used in the survey. The polymorphism rate of the SSR marker (23.61%) was lower than that of the SFP marker (30.3%).The rate of polymorphic markers on the 12 chromosomes was different. Chromosome 10 had the highest rate (30%) and chromosome 9 had the lowest rate (14.55%). SSR markers with different repeat units also showed a significant difference in polymorphism rate. The SSR markers with tetranucleotide repeats had the highest polymorphism rate (27.96%), followed by the dinucleotide repeat, trinucleotide repeat and single-nucleotide repeat markers, respectively. The result demonstrated that Xiangzi3150 and CO39 have sufficient genomic polymorphism and can be used for constructing a mapping population for rice blast resistance genes. Key words:rice; SSR;SFP;polymorphism;rice blast resistance

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黄玲.利用SSR和SFP标记分析不同抗瘟性水稻品种的多态性[J].湖南农业大学学报:自然科学版,2010,36(3):267-271.

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  • 收稿日期:2010-01-28
  • 最后修改日期:2010-03-25
  • 录用日期:2010-03-25
  • 在线发布日期: 2010-06-27
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