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Título: Genetic diversity of Brazilian triticales evaluated with genomic wheat microsatellites
Autor: COSTA, C. T. da
ALBUQUERQUE, A. C. S.
NASCIMENTO JUNIOR, A. do
MARCELINO-GUIMARÃES, F. C.
PEREIRA, J. F.
Afiliación: Cibele Tesser da Costa, CNPT; ANA CHRISTINA SAGEBIN ALBUQUERQUE, Embrapa Sede; ALFREDO DO NASCIMENTO JUNIOR, CNPT; FRANCISMAR CORREA MARCELINO GUIMARA, CNPSO; JORGE FERNANDO PEREIRA, CNPT.
Año: 2007
Referencia: Pesquisa Agropecuária Brasileira, Brasília, DF, v. 42, n. 11, p. 1577-1586, nov. 2007
Descripción: The objective of this work was to determine the genetic variability available for triticale (X Triticosecale Wittmack) crop improvement in Brazil. Forty-two wheat genomic microsatellites were used to estimate the molecular diversity of 54 genotypes, which constitute the base of one of the major triticale breeding programs in the country. Average heterozygosity was 0.06 and average and effective number of alleles per locus were 2.13 and 1.61, respectively, with average allelic frequency of 0.34. The set of genomic wheat microsatellites used clustered the genotypes into seven groups, even when the germplasm was originated primarily from only two triticale breeding programs, a fact reflected on the average polymorphic information content value estimated for the germplasm (0.36). The 71.42% transferability achieved for the tested microsatellites indicates the possibility of exploiting these transferable markers in further triticale genetic and breeding studies, even those mapped on the D genome of wheat, when analyzing hexaploid triticales.
NAL Thesaurus: heterozygosity
Palabras clave: X Triticosecale
polymorphism information content
transferability
number of alleles
frequency of alleles
índice de polimorfismo
transferabilidade
heterozigosidade
número efetivo de alelos
freqüência alélica
Notas: Título em português: Diversidade genética de triticales brasileiros avaliada com microssatélites genômicos de trigo.
Tipo de Material: Artigo de periódico
Acceso: openAccess
Aparece en las colecciones:Artigo em periódico indexado / Embrapa Unidades Centrais (AI-SEDE)

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