Research Article

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02/26/2018
Germplasm; Pepper; Plant breeding; Variability

Genetic variability among pepper genotypes is essential in obtaining hybrid combinations with greater heterotic effect and in obtaining superior strains. This work’s goal was to evaluate the genetic diversity between accessions of Capsicum annuum L., indicating the selection of promising individuals for ornamental purposes. The experiment was carried out in at the ... more

A.Maria dos Pessoa; E.Ramalho do Rêgo; M.Gonçalves de Carvalho; C.Agrine Per Santos; M.Monteiro d Rêgo
12/07/2015
Cerrado; Genetic variability; Hancornia speciosa; Mangabeira; Molecular markers; Transferability frequency

Hancornia speciosa, popularly known as mangabeira, is a fruit tree native to the Brazilian Cerrado that shows great economic potential, due to its multiple uses. Intraspecific classification of this species is difficult because it shows high morphological diversity. An early study of the species reported that there are six botanic varieties that differ morphologically mainly in ... more

C.A. Nogueira; N.B. Stafuzza; T.P. Ribeiro; A.D.L. Prado; I.P.P. Menezes; N. Peixoto; P.J. Gonçalves; L.M. Almeida
07/14/2015
Germplasm; Meristem culture; Molecular marker; Somaclonal variation

Molecular markers are efficient for assessing the genetic fidelity of various species of plants after in vitro culture. In this study, we evaluated the genetic fidelity and variability of micropropagated cassava plants (Manihot esculenta Crantz) using inter-simple sequence repeat markers. Twenty-two cassava accessions from the Embrapa Cassava & Fruits Germplasm Bank ... more

Á.M. Vidal; L.J. Vieira; C.F. Ferreira; F.V.D. Souza; A.S. Souza; C.A.S. Ledo
12/28/2015
Genetic diversity; Germplasm; ISSR; Morpho-agronomy; Perennial ryegrass; RAPD

Tunisia is rich in diverse forage and pasture species including perennial ryegrass. In order to enhance forage production and improve agronomic performance of this local germplasm, a molecular analysis was undertaken. Random amplified polymorphic DNA (RAPD), inter simple sequence repeats (ISSR) and morpho-agronomical traits markers were used for genetic diversity estimation of ryegrass ... more

S. Ghariani; H. Elazreg; N. Chtourou-Ghorbel; M. Chakroun; N. Trifi-Farah
12/22/2015
Genetic resources; Genetic variability; Germplasm; Orbignya phalerata

Babassu (Orbignya phalerata Martius) is one of the most important palms in Brazil because of the largest morphological variation, wide geographic distribution, and high socio-economic importance. The diversity present in babassu germplasm should be protected against loss to ensure their use with high productivity. Study of the available variability in populations of babassu is ... more

J.P.G. Viana; A.N.C. Borges; A.C.A. Lopes; R.L.F. Gomes; F.B. Britto; P.S.C. Lima; S.E.S. Valente
12/11/2015
Characterization; Germplasm; Groundnut; interspecific hybrid; Pollen viability; Wild species

The primary gene pool of the cultivated peanut (Arachis hypogaea L., allotetraploid AABB) is very narrow for some important characteristics, such as resistance to pests and diseases. However, the Arachis wild diploid species, particularly those from the section Arachis, still have these characteristics. To improve peanut crops, genes from the wild species can be ... more

A.P. Fávero; J.G. Pádua; T.S. Costa; M.A. Gimenes; I.J. Godoy; M.C. Moretzsohn; M.D. Michelotto
05/23/2016
Dioscorea bulbifera; Genetic structure; Germplasm; Microsatellite; Microsatellite development; Traditional agriculture

Dioscorea is the largest genus in the Dioscoreaceae family, and includes a number of economically important species including the air yam, D. bulbifera L. This study aimed to develop new single sequence repeat primers and characterize the genetic diversity of local varieties that originated in several municipalities of Brazil. We developed an enriched genomic library for ... more

D.M. Silva; M.V.B.M. Siqueira; N.F. Carrasco; C.C. Mantello; W.F. Nascimento; E.A. Veasey; D.M. Silva; M.V.B.M. Siqueira; N.F. Carrasco; C.C. Mantello; W.F. Nascimento; E.A. Veasey
11/21/2016
Germplasm; Glycine max; Multivariate analysis; Plant introduction

Owing to the narrow genetic basis of soybean (Glycine max), the incorporation of new sources of germplasm is indispensable when searching for alleles that contribute to a greater diversity of varieties. The alternative is plant introduction, which may increase genetic variability within breeding programs. Multivariate techniques are important tools to ... more

M.B. Marconato; E.M. Pereira; F.M. Silva; E.H. Bizari; J.B. Pinheiro; A.O. Mauro; S.H. Unêda-Trevisoli; M.B. Marconato; E.M. Pereira; F.M. Silva; E.H. Bizari; J.B. Pinheiro; A.O. Mauro; S.H. Unêda-Trevisoli
03/04/2016
Foliar disease; INA phenotype; Phytopathogenic bacteria; Variability

Maize White Spot (MWS), a foliar disease caused by Pantoea ananatis, could cause up to 60% yield loss. Some strains of P. ananatis harboring the ice nucleation gene inaA catalyze the formation of ice nuclei, causing tissue damage at temperatures slightly below freezing. Little is known about the relationship between the presence of the ina gene ... more

A.M. Miller; J.E.F. Figueiredo; G.A. Linde; N.B. Colauto; L.D. Paccola-Meirelles; A.M. Miller; J.E.F. Figueiredo; G.A. Linde; N.B. Colauto; L.D. Paccola-Meirelles
12/26/2018
Bean plant; genetic breeding; Molecular marker ISSR; Variability

The common bean (Phaseolus vulgaris) is a widespread crop in Brazil of dietary and economic importance, and it is cultivated primarily through family farming. Knowledge of genetic variability in landraces and improved bean cultivars is essential to explore the existing diversity, identify superior genotypes adapted to the climatic conditions of specific ... more

P.D.S. Cabral; L.C. de Souza; G.F. da Costa; F.H.L. Silva; T.C.B. Soares

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