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Genet Mol Res ; 13(4): 9097-102, 2014 Oct 31.
Artigo em Inglês | MEDLINE | ID: mdl-25366801

RESUMO

Annatto (Bixa orellana) is a plant native from the American continental tropical zone. The seeds are used to produce a carotenoid-based yellow to orange food coloring. Microsatellite markers were developed for the Brazilian native species Bixa orellana to describe its genetic diversity and structure as well as to support conservation studies. Twenty-five microsatellite loci were isolated and characterized using an enriched genomic library. Ten loci were polymorphic in the 50 accessions sampled in this study, while 15 were considered monomorphic. The mean number of alleles per locus was 3.8, ranging from 2 to 6 alleles per locus. Mean values for the observed and expected heterozygosities were 0.541 (ranging from 0 to 0.658) and 0.639 (ranging from 0.422 to 0.787), respectively. All markers described in this study will be useful in further studies evaluating the genetic diversity, population dynamics, and conservation genetics of Bixa orellana.


Assuntos
Bixaceae/química , Bixaceae/genética , Carotenoides/metabolismo , Corantes/metabolismo , Repetições de Microssatélites/genética , Alelos , Bixaceae/classificação , DNA de Plantas/química , DNA de Plantas/genética , Frequência do Gene , Biblioteca Genômica , Genótipo , Dados de Sequência Molecular , Polimorfismo Genético , Análise de Sequência de DNA
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