Research Article

Related GMR Articles

12/12/2006
Body structure; Frame scores; Genetic improvement; Genetic parameters; Nellore

Models for estimation of frame scores in Nellore beef cattle (FRAME_GMA) were developed, comparing them with frame scores estimated using equations proposed by the Beef Improvement Federation (FRAME_BIF, USA). Correlation among frame scores obtained by these two methodologies, along with the independent variables considered in the estimation models, were also studied. A data set with 12,728 ... more

A.R.V.R. Horimoto; J.B.S. Ferraz; J.C.C. Balieiro; J.P. Eler
10/04/2012
Forage; Genetic improvement; Plant resistance

An understanding of the interaction between spittlebugs and forage grasses is essential for establishing factors that favor productive pastures. In the present study, we evaluated the protein profiles of the spittle of Mahanarva spectabilis (Distant, 1909) (Hemiptera: Cercopidae) fed various elephant grass genotypes. Each plant was infested with a single fifth-instar M. ... more

A.M. Auad; M.F. Martins; I. Fonseca; S.V. Paula-Moraes; M.M. Kopp; M.C. Cordeiro
08/31/2012
Genetic improvement; Popping expansion; Productivity; Zea mays

This study aimed to obtain estimates of stability and adaptability of phase launched materials and materials recommended in the country, for the northern and northwestern regions of Rio de Janeiro State, Brazil, and made a comparative analysis of different methods to evaluate stability and adaptability of grain yield and popping expansion. To this end, 10 genotypes were evaluated (UNB2U- ... more

G.F. Pena; A.Tdo Amaral Júnior; L.S.A. Gonçalves; L.S. Candido; C. Vittorazzi; R.M. Ribeiro; S.P.Freitas Júnior
04/10/2012
Genetic improvement; Plant breeding; Selection efficiency

The objective of this study was to compare the BLUP selection method with different selection strategies in F2:4 and assess the efficiency of this method on the early choice of the best common bean (Phaseolus vulgaris) lines. Fifty-one F2:4 progenies were produced from a cross between the CVIII8511 x RP-26 lines. A randomized block design was used with 20 ... more

M.P. Mendes; M.A.P. Ramalho; A.F.B. Abreu
08/28/2014
Genetic improvement; Honeybee queen selection; Major royal jelly proteins; mrjp3; Polymorphism

It is important to select the best honeybees that produce royal jelly to identify important molecular markers, such as major royal jelly proteins (MRJPs), and hence contribute to the development of new breeding strategies to improve the production of this substance. Therefore, this study focused on evaluating the genetic variability of mrjp3, mrjp5, and mrjp8 ... more

R.S. Parpinelli; M.C.C. Ruvolo-Takasusuki; V.A.A. Toledo
03/12/2014
Genetic improvement; Multi-diverse analysis; Saccharum

This study evaluated different strategies to select sugar cane families and obtain clones adapted to the conditions of the Brazilian savannah. Specifically, 7 experiments were conducted, with 10 full sib families, and 2 witnesses in common to all experiments, in each experiment. The plants were grown in random blocks, with witnesses in common (incomplete blocks), and 6 repetitions of each ... more

M.H.P. Barbosa; A. Ferreira; L.A. Peixoto; M.D.V. Resende; M. Nascimento; F.F. Silva
01/21/2014
Genetic improvement; Recurrent selection; Selection index; Zea mays

The popcorn breeding program of Universidade Estadual do Norte Fluminense Darcy Ribeiro aims to provide farmers a cultivar with desirable agronomic traits, particularly with respect to grain yield (GY) and popping expansion (PE). We evaluated full-sib families from the seventh cycle of recurrent selection and estimated the genetic progress with respect to GY and PE. Eight traits were ... more

I.L.J. Freitas; A.Tdo Amaral Júnior; S.P. Freitas; P.D.S. Cabral; R.M. Ribeiro; L.S.A. Gonçalves
09/23/2002
Argentine Creole; Genetic variability; Heterozygosity; Horses; Serum protein polymorphysm; Thoroughbred

Genetic polymorphism was analyzed for five blood proteins: albumin - Al, esterase - Es, α1B-glycoprotein - Xk, transferrin - Tf and hemoglobin - Hb in 200 Thoroughbred (TB) and 124 Argentine Creole (AC) horses. Of the five systems examined, Tf and Hb were not in Hardy-Weinberg equilibrium in either breed and Es was not in equilibrium in the Creole breed. Genetic ... more

S. Díaz; F.N. Dulout; P. Peral-García
06/20/2007
Heterozygosity; Leopardus pardalis; Leopardus tigrinus; Leopardus wiedii; Microsatellite

The microsatellite loci FCA045, FCA077, FCA008, and FCA096 are highly variable molecular markers which were used to determine the genetic diversity in 148 captive Leopardus sp. The PCR-amplified products of microsatellite loci were characterized in ABI Prism 310 Genetic Analyzer. Allele numbers, heterozygosity, polymorphism information content, exclusive allele number, and ... more

A.B. Grisolia; V.R. Moreno; F. Campagnari; M.P. Milazzotto; J.F. Garcia; C.H. Adania; E.B. Souza
11/25/2008
Heterozygosity; Macroevolution; Neutral evolution; Phylogenetic autocorrelation; Phylogenetic comparative method; Population genetics

The amount of genetic variability in species and populations has been mainly related to microevolutionary forces operating in natural populations and the influence of phylogenetic processes for the distribution of genetic variability has been neglected. To investigate how the current genetic variability distribution depends on the genetic variability of ancestral species, we simulated the ... more

J. José; W.J. Puma-Villanueva; F.J. Von Zuben; J.A.F. Diniz-Filho

Pages