Title:	Genetic diversity of the forage peanut in the Jequitinhonha, São Francisco, and Paranã River valleys of Brazil.
Authors:	AZÊVEDO, H. S. F. S. SOUSA, A. C. B. MARTINS, K. OLIVEIRA, J. C. TEIXEIRA, R. B. SILVA, L. M. da VALLS, J. F. M. ASSIS, G. M. L. de CAMPOS, T. de
Affiliation:	Programa de Pós-Graduação em Biotecnologia e Recursos Genéticos da Rede Bionorte, Embrapa Rondônia; Universidade Federal da Paraíba; Universidade Federal de São Carlos; Universidade Federal do Acre; RENATA BELTRAO TEIXEIRA YOMURA, CPAF-Acre; LUCIELIO MANOEL DA SILVA, CPAF-Acre; JOSE FRANCISCO MONTENEGRO VALLS, Cenargen; GISELLE MARIANO LESSA DE ASSIS, CPAF-Acre; TATIANA DE CAMPOS, CPAF-Acre.
Date Issued:	2016
Citation:	Genetics and Molecular Research, Ribeirão Preto, v. 15, n. 3, Sept. 2016.
Description:	Arachis pintoi and A. repens are legumes with a high forage value that are used to feed ruminants in consortium systems. Not only do they increase the persistence and quality of pastures, they are also used for ornamental and green cover. The objective of this study was to analyze microsatellite markers in order to access the genetic diversity of 65 forage peanut germplasm accessions in the section Caulorrhizae of the genus Arachis in the Jequitinhonha, São Francisco and Paranã River valleys of Brazil. Fifty-seven accessions of A. pintoi and eight of A. repens were analyzed using 17 microsatellites, and the observed heterozygosity (HO), expected heterozygosity (HE), number of alleles per locus, discriminatory power, and polymorphism information content were all estimated. Ten loci (58.8%) were polymorphic, and 125 alleles were found in total. The HE ranged from 0.30 to 0.94, and HO values ranged from 0.03 to 0.88. By using Bayesian analysis, the accessions were genetically differentiated into three gene pools. Neither the unweighted pair group method with arithmetic mean nor a neighbor-joining analysis clustered samples into species, origin, or collection area. These results reveal a very weak genetic structure that does not form defined clusters, and that there is a high degree of similarity between the two species.
Thesagro:	Pastagem Leguminosa forrageira Variação genética Marcador genético
NAL Thesaurus:	Pastures Forage legumes Arachis pintoi Genetic variation Genetic markers Microsatellite repeats
Keywords:	Amendoim forrageiro Forage peanut Arachis repens Marcador microssatélite Vale do Jequitinhonha Vale do Rio São Francisco Vale do Rio Paraná Marcadores genéticos Pastizales Repeticiones de microsatélite Variación genética Leguminosas forrajeras
ISSN:	1676-5680
DOI:	10.4238/gmr.15038601
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CPAF-AC)