Identificação de SNPs para conteúdo de ácidos graxos em soja pela técnica HRM
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Pesquisa Agropecuária Brasileira
Abstract
O objetivo deste trabalho foi identificar SNPs em genes associados ao conteúdo de ácidos graxos em soja e implementar a metodologia "high resolution melting" (HRM) para genotipagem desses SNPs. Os iniciadores HRM foram desenhados para discriminar os alelos SNPs em duas populações de mapeamento (RILs e F2) e seguiram o padrão esperado de segregação. Os SNPs do gene ABI associaram-se significativamente ao conteúdo de ácido esteárico (R2 = 12,14), e os do gene FAD3B, aos conteúdos de ácido oleico (R2 = 14,69) e linolênico (R2 = 10,62). A técnica de genotipagem dos SNPs por HRM é eficiente na discriminação das classes genotípicas.
The objective of this work was to identify SNPs in genes associated with fatty acid content in soybean and to implement the high resolution melting (HRM) technique for SNP genotyping. HRM primers were designed to discriminate SNP alleles in two mapping populations (RILs and F2) and followed the expected pattern of segregation. The ABI gene SNPs were significantly associated with stearic acid content (R2 = 12.14), and the ones from the FAD3B gene, with oleic (R2 = 14.69) and linolenic acid (R2 = 10.62) contents. The technique of genotyping SNPs by HRM is efficient to discriminate genotype classes.
The objective of this work was to identify SNPs in genes associated with fatty acid content in soybean and to implement the high resolution melting (HRM) technique for SNP genotyping. HRM primers were designed to discriminate SNP alleles in two mapping populations (RILs and F2) and followed the expected pattern of segregation. The ABI gene SNPs were significantly associated with stearic acid content (R2 = 12.14), and the ones from the FAD3B gene, with oleic (R2 = 14.69) and linolenic acid (R2 = 10.62) contents. The technique of genotyping SNPs by HRM is efficient to discriminate genotype classes.
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