Research Article

Related GMR Articles

07/08/2008
Bothrops moojeni; conservation genetics; Genetic structure; Genetic variability; RAPD; Vipers

Bothrops moojeni is an abundant venomous snake responsible for most of the snakebite cases in the Central region of Brazil and as a result of the anthropogenic habitat disturbance, such as the increase in extensive farming, the range of B. moojeni has been greatly fragmented. Here, we obtained genomic DNA from a total of 75 snakes belonging to four populations. Genetic ... more

N.C.L. Dutra; M.P.C. Telles; D.L. Dutra; N.J.Silva Júnior
06/10/2008
Biomphalaria; Genetic variability; Polymorphism; RAPD-PCR; Schistosomiasis

Schistosomiasis remains one of the most prevalent parasitic infections and has significant economic and public health consequences in many developing countries. Economic development and improvement in standard of living in these countries are dependent on the elimination of this odious disease. For the control of Schistosomiasis, understanding the host/parasite association is important, since ... more

A.L.D. Oliveira; D. Da Silva; E.M. Zanotti-Magalhães; E.M. Zanotti-Magalhães; A.Z. Abdel-Hamid; J.T. Ribeiro-Paes
03/18/2008
Genetic variability; Horse; Microsatellites; Pantaneiro horses

The genetic variability for a sample of 227 animals from three populations of Pantaneiro horses was estimated using data from 10 microsatellite loci. The number of alleles and the proportion of heterozygosity indicated high variability. A total of 91 alleles were found, with a significantly high mean number of alleles. The mean polymorphic information content was 0.7 and the paternity ... more

E.H. Giacomoni; G.P. Fernández-Stolz; T.R.O. Freitas
10/25/2011
Gamma-rays; Genetic variability; ISSR markers; Mutation induction; Ward-MLM

Bananas are among the most important fruit crops worldwide, being cultivated in more than 120 countries, mainly by small-scale producers. However, short-stature high-yielding bananas presenting good agronomic characteristics are hard to find. Consequently, wind continues to damage a great number of plantations each year, leading to lodging of plants and bunch loss. Development of new ... more

R.K.N. Pestana; E.P. Amorim; C.F. Ferreira; V.B.O. Amorim; L.S. Oliveira; C.A.S. Ledo; S.O. Silva
12/08/2011
Forage; Genetic variability; Molecular markers

The grasses of the genus Brachiaria account for 80% of the cultivated pastures in Brazil. Despite its importance for livestock production, little information is available for breeding purposes. Embrapa has a population of B. ruziziensis from different regions of Brazil, representing most of existing variability. This population was used to initiate an improvement program ... more

A.L.S. Azevedo; P.P. Costa; M.A. Machado; C.M.P. de Paula; F.S. Sobrinho
12/08/2011
Cluster; Genetic variability; Heritability; Parental selection; Principal component analysis

We characterized 13 accessions of dry peas of different origins from various growing regions in Argentina, based on three replications of 20 plants cultivated in 2009 and 2010 in a greenhouse, with the objective of selecting those with favorable characteristics for use in breeding programs. Significant differences were found for length and width of stipule and pod, length of the ... more

I. Gatti; M.A. Espósito; P. Almirón; V.P. Cravero; E.L. Cointry
12/14/2011
Genetic variability; Mangifera indica; Molecular markers

We evaluated genetic variability of mango (Mangifera indica) accessions maintained in the Active Germplasm Bank of Embrapa Meio-Norte in Teresina, Piauí, Brazil, using RAPDs. Among these accessions, 35 originated from plantings in Brazil, six from the USA and one from India. Genomic DNA, extracted from leaf material using a commercial purification kit, was subjected to PCR with ... more

I.G.B. Souza; S.E.S. Valente; F.B. Britto; V.A.B. de Souza; P.S.C. Lima
11/25/2011
Cajá; Genetic variability; Plant improvement

The arboreal species Spondias mombin L. (Anacardiaceae) is widely distributed in Brazil, where the fruits, known by the common name of cajá, are an important commercial commodity. We evaluated genetic variability among 32 cajá accessions of the Germplasm Collection of Embrapa Meio-Norte using RAPD technique. Reaction conditions for efficient RAPD amplifications were optimized in ... more

A.T.B. Lima; V.A.B. de Souza; R.L.F. Gomes; P.S.C. Lima
11/22/2011
Akodon; Akodon cursor; Cryptic species; Genetic variability; Hantavirus reservoir; RAPD

The cursor complex is a group within the Akodon genus of South American rodents, formed by Akodon cursor and A. montensis. Correct distinction between these two species is of great importance since they can harbor different Hantavirus strains. These species are only distinguishable by means of karyotypic or internal anatomic features, requiring ... more

G.M. Yazbeck; R.L. Brandão; H.M. Cunha; A.P. Paglia
02/22/2011
Gene expression; Genetic variability; Isoenzymes; Ontogenetic stages

Sib-seedlings of 95 strains of the strictly autogamous grass Hordeum euclaston were analyzed by horizontal polyacrylamide gel electrophoresis for four isoenzyme systems at a specific ontogenetic stage. We found differences in the activity of some genes among individuals of this species. Hence, an ontogenetic analysis was carried out to investigate 12 strains at five ontogenetic ... more

J.E. Georg-Kraemer; C.A.S. Ferreira; S.S. Cavalli

Pages