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A lima bean core collection based on molecular markers Scientia Agricola
Gomes,Regina Lucia Ferreira; Costa,Marcones Ferreira; Alves-Pereira,Alessandro; Bajay,Miklos Maximiliano; Viana,João Paulo Gomes; Valente,Sérgio Emílio dos Santos; Lopes,Ângela Celis de Almeida; Zucchi,Maria Imaculada; Pinheiro,José Baldin.
ABSTRACT Some germplasm collections have a high number of accessions, which makes it difficult to explore the genetic variability present in the germplasm bank due to the redundancy and the difficulty of detailed analysis of all conserved accessions. Therefore, our study aimed to analyze the genetic diversity of 153 lima bean (Phaseolus lunatus) accessions for the purpose of constructing a core collection. Eleven SSRs were used for this purpose. The 153 lima bean accessions can be represented by low redundancy using a minimum of 34 accessions, thus representing 22 % of the size of the entire germplasm bank. The core collection had a higher Shannon diversity index and expected heterozygosity (1.906 and 0.811, respectively) than those presented by the entire...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Germplasm; Genetic diversity; Genetic structure; Microsatellite markers.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162020000201100
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A note on the distribution of genetic diversity of Anglo-Nubian goats in central-northern farms of Piauí, Brazil R. Bras. Zootec.
Silvestre,Ellida de Aguiar; Costa,Márcio da Silva; Silva,Pollyana Oliveira da; Bajay,Miklos Maximiliano; Pinheiro,José Baldin; Zucchi,Maria Imaculada; Campelo,José Elivalto Guimarães; Britto,Fábio Barros.
The objective of this study was to characterize the genetic variability of Anglo-Nubian goats using microsatellite markers. The study was conducted using herds from four municipalities of Central-Northern Piauí (Teresina, José de Freitas, Campo Maior, and Angical), where technical information is scarce. Seven markers suggested by FAO were used (ILSTS11, McM527, INRA23, ETH10, OarfCB304, OarfCB48, and MAF209). The samples were genotyped using a 7% polyacrylamide gel. The average number of alleles per locus was 4.0, with observed and expected heterozygosity of 0.38 and 0.55, respectively. Few deviations from the Hardy-Weinberg equilibrium were observed for each population. Only two loci deviated significantly in two localities. The coefficient of gene...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Endogamy; Genetic structure; Microsatellite; Molecular markers.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982015000400155
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Genetic diversity among Brazilian soybean cultivars based on SSR loci and pedigree data BABT
Priolli,Regina Helena Geribello; Pinheiro,José Baldin; Zucchi,Maria Imaculada; Bajay,Miklos Maximiliano; Vello,Natal Antonio.
In this study, simple sequence repeats (SSR) loci and pedigree data were used to investigate the genetic relationship in a group of 168 Brazilian soybean cultivars. Eighteen SSR loci produced an average of 5.06 alleles and a mean gene diversity of 0.58 for the cultivars studied. Genetic distance (GD) was determined using the modified Roger's Wright distance, and a final dendrogram was in agreement with the cultivar pedigree. A distance matrix based on the coefficient of parentage scores was also generated for the cultivars, which ranged from 0 to 1, with a mean of 0.18, whereas SSR-based genetic similarity (1- GD) ranged from 0.01 to 0.90, with a mean of 0.25. Mantel's Z test showed that the similarity matrices generated from both the data sets were low,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Coefficient of parentage; Glycine max (L.) Merr.; Microsatellite markers.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000300004
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Population genomics and gene introgression in goat herds naturally adapted to Brazil Rev. Ciênc. Agron.
Moura,Jeane de Oliveira; Campelo,José Elivalto Guimarães; Bajay,Miklos Maximiliano; Sarmento,José Lindenberg Rocha; Araújo,Adriana Mello de.
ABSTRACT The aim of this study was to apply the Illumina 50 K goat SNP Chip to analyse population genomic structure in two herds of Marota goats in the State of Piauí, one private and the other an official conservation herd, and to investigate evidence of genetic erosion in these herds caused by the Anglo-Nubian goat. To that end, 86 Marota and 10 Anglo-Nubian animals were genotyped. Genetic diversity was analysed by comparing minor allele frequency (MAF) in the herds. Population structure and genetic differentiation were evaluated using a Bayesian approach, principal component analysis (PCA) and the fixation index (FST). High genetic differentiation (FST = 0.16) was seen in the Marota population in relation to the Anglo-Nubian. The private herd shared a...
Tipo: Info:eu-repo/semantics/article Palavras-chave: SNP chip; Population structure; Genetic resources.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902019000300476
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