Research Article

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Bayesian inference; marker-assisted selection; Molecular breeding value

The availability of molecular marker information has turned out to be an opportunity to improve animal breeding programs, by the inclusion of those effects in the estimation of breeding values. Along this perspective, the aims of present research were to compare genetic evaluation models that assume or not marker effects in the estimation of breeding values, as well as to estimate the ... more

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Bayesian inference; Beef cattle; Fertility; Genetic parameters

We estimated heritability for subsequent rebreeding (SR) of heifers and genetic correlations between this trait and weaning weight (WW), weight gain from weaning to yearling (WG), age at first calving (AFC), and mature cow weight (MW), in order to evaluate whether SR could be included as selection criterion in Nellore cattle. The SR of heifers was defined by attributing a value of 1 ( ... more

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Cercospora zeae-maydis; Combining ability; Exserohilum turcicum; Gray leaf spot; Northern leaf blight; Zea mays L.

We estimated general and specific combining abilities and examined resistance to northern leaf blight (Exserohilum turcicum) and to gray leaf spot (Cercospora zeae-maydis) in a set of nine inbred popcorn lines. These inbreds were crossed in a complete diallel scheme without reciprocals, which produced 36 F1 hybrids. Two experiments with a square lattice design ... more

R.A. Vieira; C.A. Scapim; L.M. Moterle; D.J. Tessmann; T.V. Conrado; A.T.Amaral Júnior
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Bayesian inference; Galliformes; Maximum likelihood; Maximum parsimony; Mitochondrial genome; Phylogeny

Complete mitochondrial DNA sequences have been used successfully to estimate phylogenetic relationships among animal taxa, and for studies of population genetics and molecular evolution. We made phylogenetic analyses of 22 species of Galliformes, with two species of Anseriformes as outgroups, using maximum likelihood (ML), maximum parsimony (MP) and Bayesian inference (BI) methods based ... more

X.Z. Kan; J.K. Yang; X.F. Li; L. Chen; Z.P. Lei; M. Wang; C.J. Qian; H. Gao; Z.Y. Yang
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Bayesian inference; Beef cattle; Conformation score; Heritability; Threshold model

We obtained heritability and (co)variance component estimates for slaughter conformation scores at 420 days of age (SCS420), age at calving (first, AFC; second, ASC), calving occurrence until 38 months of age (CP38), weight at 420 days of age (W420), and scrotal circumference at 420 days (SC420) in Canchim (5/8 Charolais + 3/8 Zebu) cattle. A total of 23, ... more

L.H.F. Borba; F. Baldi; F.L.B. Feitosa; L.O.C. da Silva; A.S.C. Pereira; M.M. Alencar; L.H.F. Borba; F. Baldi; F.L.B. Feitosa; L.O.C. da Silva; A.S.C. Pereira; M.M. Alencar
11/07/2014
Biochemical mechanisms; Genetic resistance; Plant-pathogen interaction; Proteinase inhibitor

Several plant organs contain proteinase inhibitors, which are produced during normal plant development or are induced upon pathogen attack to suppress the enzymatic activity of phytopathogenic microorganisms. In this study, we examined the presence of proteinase inhibitors, specifically trypsin inhibitors, in the leaf extract of Capsicum baccatum var. pendulum inoculated ... more

M.M. Moulin; R. Rodrigues; S.F.F. Ribeiro; L.S.A. Gonçalves; C.S. Bento; C.P. Sudré; I.M. Vasconcelos; V.M. Gomes
05/12/2015
common bean; Diallel method; Genetic resistance; Pseudocercospora griseola

The fungus Pseudocercospora griseola, the causal agent of angular leaf spot in the common bean (Phaseolus vulgaris L.), exhibits a broad pathogenic variability that complicates the development of resistant cultivars. For breeding programs to successfully obtain common bean cultivars with durable resistance, knowing the aggressiveness of different strains, as well as the ... more

R. Pereira; E.A. Souza; Q.L. Barcelos; A.F.B. Abreu; S.S. Librelon
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Allelochemicals; Genetic resistance; Plant breeding; Solanum lycopersicum; Solanum pennellii

Acyl sugars present in the tomato Solanum lycopersicum ‘LA-716’ accession confer good levels of resistance to arthropod pests. The objective of the present study was to select F2 plants from the interspecific cross Solanum pennellii ‘LA-716’ x Solanum lycopersicum ‘Redenção’ to assess resistance to spider mites (Tetranychus urticae) based on ... more

J.E. Baier; J.T.V. Resende; M.V. Faria; K. Schwarz; L. Meert
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Aggressiveness; Differentiating series; Genetic resistance; Partial diallels; Physiological races

Bacterial wilt of common bean caused by Curtobacterium flaccumfaciens pv. flaccumfaciens is an important disease in terms of economic importance. It reduces grain yield by colonizing xylem vessels, subsequently impeding the translocation of water and nutrients to the superior plant parts. The existence of physiological ... more

S.C.D. Valdo; A. Wendland; L.G. Araújo; L.C. Melo; H.S. Pereira; P.G. Melo; L.C. Faria
08/11/2009
diallel analysis; Genetic divergence; Heterosis; Molecular markers; Popcorn; Zea mays

Diallel analysis was used to obtain information on com­bining ability, heterosis, estimates of genetic distances by random amplified polymorphic DNA (RAPD) and on their correlations with heterosis, for the popcorn varieties RS 20, UNB2, CMS 43, CMS 42, Zélia, UEM J1, UEM M2, Beija-Flor, and Viçosa, which were crossed to obtain all possible combinations, without reciprocals. The genitors ... more

R.E.F. Munhoz; A.J. Prioli; A.T.Amaral Júnior; C.A. Scapim; G.A. Simon

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