Identification of duplicates of cassava accessions sampled on the North Region of Brazil using microsatellite markers


Autoria(s): Moura,Elisa Ferreira; Farias Neto,João Tomé de; Sampaio,José Edson; Silva,Diehgo Tuloza da; Ramalho,Girena Fernandes
Data(s)

01/12/2013

Resumo

Duplicates are common in germplasm banks and their identification is needed to facilitate germplasm bank management and to reduce maintenance costs. The aim of this work was to identify duplicates of cassava from a germplasm bank in Eastern Amazon, which had been previously characterized both morphological and agronomically. In order to be genotyped with 15 microsatellite loci, 36 accessions were selected. These accessions were classified into 13 groups of similar morpho-agronomical characteristics. All loci were polymorphic, and 75 alleles were identified, with an average of five alleles per loci and H E = 0.66. There were determined 34 pairs of genotypes with identical multiloci profiles and the probability of genetic identity was 1.1x10-12 with probability of exclusion of 99.9999%. Among these duplicates, there are accessions sampled on different years and places, but with different names and accessions with the same name sampled in different places and years. The study identified genotypes that are grown in different places and that have been maintained over the years by local farmers.

Formato

text/html

Identificador

http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000400008

Idioma(s)

en

Publicador

Instituto Nacional de Pesquisas da Amazônia

Fonte

Acta Amazonica v.43 n.4 2013

Palavras-Chave #Manihot esculenta #germplasm #molecular markers
Tipo

journal article