Genetic Diversity
Genetic diversity of arboreal cotton populations of the Brazilian semiarid: a remnant primary gene pool for cotton cultivars
Authors: I.P.P. de Menezes, L.V. Hoffmann, T.H. de Lima, A.R. da Silva, V.S. Lucena and P.A.V. Barroso
Mocó cotton belong to the same species as the cultivated species, Gossypium hirsutum, and cultivated forms were mainly landraces but also developed as cultivars, bearing good fiber quality and drought tolerant when cropped as a perennial species. The northeast Brazil crop system based on this cotton type is finished, wi.. Read More»
- Genet. Mol. Res. 16(3):
- gmr16039659
- DOI:
- 10.4238/gmr16039659
Genetic diversity of high performance cultivars of upland and irrigated Brazilian rice.
Authors: G.R.C. Coelho, C. Brondani, L.V. Hoffmann, P.A.M.R. Valdisser, T.C.O. Borba, J.A. Mendon�§a, L.A. Rodrigues and I.P.P. de Menezes
The objective of this study was to analyze the diversity and discrimination of high-performance Brazilian rice cultivars using microsatellite markers. Twenty-nine rice cultivars belonging to EMBRAPA Arroz e Feijão germplasm bank in Brazil were genotyped by 24 SSR markers to establish their structure and genetic discrimi.. Read More»
- Genet. Mol. Res. 16(3):
- gmr16039793
- DOI:
- 10.4238/gmr16039793
Genotypic variation and relationships among nitrogen-use efficiency and agronomic traits in tropical maize inbred lines
Authors: M.C. Rodrigues, W.M. Rezende, M.E.J. Silva, S.V. Faria, L.T. Zuffo, J.C.C. Galv�£o and R.O. DeLima
Improvement in nitrogen-use efficiency (NUE) on maize is among the best strategies to mitigate the problems of poor soil fertility in tropical conditions. The objectives of this study were: i) to quantify the genetic variability for NUE-components and agronomic traits in a set of tropical maize inbred lines; ii) to study the g.. Read More»
- Genet. Mol. Res. 16(3):
- gmr16039757
- DOI:
- 10.4238/gmr16039757
A RAPD-PCR-based genetic diversity analysis of Helicoverpa armigera and H. zea populations in Brazil
Authors: H.M. Lopes, C.S. Bastos, L.S. Boiteux, J. Foresti and F.A. Suinaga
Helicoverpa armigera is the most significant pest of agriculture in Asia, Europe, Africa, and Australasia, causing damage to crops greater than US$2 billion annually and until 2013 it was not detected in Brazil. Helicoverpa zea is restricted to the American continent and is important to corn and a secondary pest of cotton and .. Read More»
- Genet. Mol. Res. 16(3):
- gmr16038757
- DOI:
- 10.4238/gmr16038757
Population genetic structure of three species in the genus Astrocaryum G. Mey. (Arecaceae)
Authors: N.P. Oliveira, M.S.P. Oliveira, L.C. Davide and S. Kalisz
We assessed the level and distribution of genetic diversity in three species of the economically important palm genus Astrocaryum located in Pará State, in northern Brazil. Samples were collected in three municipalities for Astrocaryum aculeatum: Belterra, Santarém, and Terra Santa; and in two municipalities for .. Read More»
- Genet. Mol. Res. 16(3):
- gmr16039676
- DOI:
- 10.4238/gmr16039676
Isolation and characterization of polymorphic microsatellite markers for the chub mackerel (Scomber japonicus) and cross-species amplification in the blue mackerel (S. australasicus)
Authors: F.F. Chen, C.Y. Ma, L.P. Yan, H. Zhang, W. Wang, Y. Zhang and L.B. Ma
In this study, 10 polymorphic microsatellite markers were developed in Scomber japonicus and were examined on 30 individuals collected from the North Pacific. The number of alleles per locus ranged from 4 to 17. The observed and expected heterozygosities per locus ranged from 0.2759 to 0.8621 and from 0.43071 to 0.9177, respec.. Read More»
- Genet. Mol. Res. 16(3):
- gmr16039712
- DOI:
- 10.4238/gmr16039712
Analysis of genetic diversity of Hyptis pectinata (L.) Poit. plants using ISSR markers
Authors: R.B. Feitosa-Alcantara, A.V.C. Silva, A.F. Blank, C.S. Almeida, S.V. Alvares-Carvalho and M.F. Arrigoni-Blank
Hyptis pectinata, popularly known as ‘sambacaitá’ or ‘canudinho’, is a medicinal and aromatic species widely used in the Brazilian Northeast. In Sergipe, the excessive extraction of natural resources may reduce the genetic variability of native plants. Thus, molecular markers have frequently been.. Read More»
- Genet. Mol. Res. 16(3):
- gmr16039603
- DOI:
- 10.4238/gmr16039603
Farmer variety exchange along Amazonian rivers influences the genetic structure of manioc maintained in a regional Brazilian Gene Bank
Authors: S.B. Sousa, G.F. Silva, M.C. Dias, C.R. Clement and N.R. Sousa
Knowledge of agro-morphological and genetic variability of germplasm diversity is a prerequisite for its use in breeding. The aim of this study was to characterize the genetic diversity of the manioc (Manihot esculenta) Active Germplasm Bank (AGB) at Embrapa Amazônia Ocidental using microsatellite markers. We evaluated 4.. Read More»
- Genet. Mol. Res. 16(3):
- gmr16039690
- DOI:
- 10.4238/gmr16039690
Diversity and genetic structure of the native Brazil nut tree (Bertholletia excelsa Bonpl.) population
Authors: J.C. Cabral, A.B. Baldoni, H. Tonini, V.C.R. Azevedo, L.D. Giustina, A.V. Tiago and A.A.B. Rossi
The present study was carried out in a native Brazil nut tree population (Bertholletia excelsa Bonpl., Lecythidaceae) to assess its genetic diversity and structure. Ten microsatellite markers were used to genotype 198 adult trees (B. excelsa). The population presented high genetic diversity and inbreeding absence rates. The em.. Read More»
- Genet. Mol. Res. 16(3):
- gmr16039702
- DOI:
- 10.4238/gmr16039702
An optimized protocol for DNA extraction in plants with a high content of secondary metabolites, based on leaves of Mimosa tenuiflora (Willd.) Poir. (Leguminosae)
Authors: S.R. Arruda, D.G. Pereira, M.M. Silva-Castro, M.G. Brito and A.M. Waldschmidt
Some species are characterized by a high content of tannins, alkaloids, and phenols in their leaves. These secondary metabolites are released during DNA extraction and might hinder molecular studies based on PCR (polymerase chain reaction). To provide an efficient method to extract DNA, Mimosa tenuiflora, an important legumino.. Read More»
- Genet. Mol. Res. 16(3):
- gmr16039063
- DOI:
- 10.4238/gmr16039063