Consulta: creatorFacets:"Alves-Pereira,Alessandro"
Registros recuperados: 3
Data/hora: 01/06/2024 14:02:04

Genetic divergence among populations and accessions of the spineless peach palm from Pampa Hermosa landrace used in the heart-of-palm agribusiness in Brazil
Provedor de dados: 74
Autores: Alves-Pereira,Alessandro; Clement,Charles R.; Picanço-Rodrigues,Doriane.
Although originally domesticated for its fruit, exploitation of the peach palm (Bactris gasipaes Kunth) in the production of gourmet heart-of-palm has also become an important activity, hence the need for improved material for large-scale production, on employing the Pampa Hermosa landrace as the seed source. In this study 11 microsatellite markers were used to evaluate genetic divergence among 96 elite plants representing four populations of spineless peach palm from the above cited source. Genetic variability was high (H T = 0.82). The low levels of divergence [F ST (0.023), G ST' (0.005)] and the high number of migrants (Nm -3.8 to 52.2) indicated significant interpopulation gene flow. Some of the plants presented high levels of genetic divergence, but...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Bactris gasipaes; Heart-of-palm; Microsatellites; Genetic divergence; Genetic improvement.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572012000300015

High genetic diversity among and within bitter manioc varieties cultivated in different soil types in Central Amazonia
Provedor de dados: 74
Autores: Alves-Pereira,Alessandro; Peroni,Nivaldo; Cavallari,Marcelo Mattos; Lemes,Maristerra R.; Zucchi,Maria Imaculada; Clement,Charles R.
Abstract Although manioc is well adapted to nutrient-poor Oxisols of Amazonia, ethnobotanical observations show that bitter manioc is also frequently cultivated in the highly fertile soils of the floodplains and Amazonian dark earths (ADE) along the middle Madeira River. Because different sets of varieties are grown in each soil type, and there are agronomic similarities between ADE and floodplain varieties, it was hypothesized that varieties grown in ADE and floodplain were more closely related to each other than either is to varieties grown in Oxisols. We tested this hypothesis evaluating the intra-varietal genetic diversity and the genetic relationships among manioc varieties commonly cultivated in Oxisols, ADE and floodplain soils. Genetic results did...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Manihot esculenta; Microsatellites; Amazonian dark earths; Floodplain; Oxisols.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572017000300468

A lima bean core collection based on molecular markers
Provedor de dados: 63
Autores: 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