Title:	Genetic diversity of Brazilian triticales evaluated with genomic wheat microsatellites.
Authors:	COSTA, C. T. da ALBUQUERQUE, A. C. S. NASCIMENTO JUNIOR, A. do MARCELINO, F. C. PEREIRA, J. F.
Affiliation:	CIBELE TESSER DA COSTA, CNPT ANA CHRISTINA SAGESBIN ALBUQUERQUE, Embrapa Sede ALFREDO NASCIMENTO JUNIOR, CNPT FRANCISMAR CORREA MARCELINO GUIMARA, CNPSO JORGE FERNANDO PEREIRA, CNPT.
Date Issued:	2007
Citation:	Pesquisa Agropecuária Brasileira, Brasília, DF, v. 42, n. 11, p. 1577-1586, nov. 2007.
Description:	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.
Keywords:	X Triticosecale Índice de polimorfismo Transferabilidade Heterozigosidade Número efetivo de alelos Freqüência alélica
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CNPSO)