Research Article

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Breeding; Damaged seeds; Euschistus heros; Glycine max

The soybean crop is undoubtedly important to not only Brazil but also for most parts of the globe, as economic and social dependency upon this crop becomes evident. However, the scenario of the soybean crop production has faced challenges with environmental changes, which have escalated the incidence of pests. Due to the abundance of stink bugs, especially ... more

G.L. Jorge; A.P.O. Nogueira; O.T. Hamawaki; B.Q.V. Machado; A.J.O. Santana; B. .A.M.Borges; R.L. Hamawaki; C.D.L. Hamawaki
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Augmented blocks; Breeding; strawberry

Strawberry (Fragaria x ananassa) stands out among small fruits as the most planted in Brazil, generating considerable income and employment. However, producers are dependent on cultivars originating from international breeding programs and imported seedlings. This entails high costs and plants poorly adapted to the edaphoclimatic conditions of Brazil. In ... more

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broiler; Genetic correlation; Gibbs sampling; Heritability; Liver fat trait; Restricted maximum likelihood

Intensive selection of broilers for improved growth rate is known to exert a negative effect on broiler health, such as an increase in body fat (and its related diseases). Excessive fat deposition in the liver can cause fatty liver hemorrhagic syndrome (FLHS); in addition, traits associated with liver fat have also been associated with FLHS. This study explored the genetic relationships ... more

M.J. Liang; Z.P. Wang; L. Xu; L. Leng; S.Z. Wang; P. Luan; Z.P. Cao; Y.M. Li; H. Li
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Dairy cattle; Genetic correlation; Heritability; Random regression; Somatic cell count

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Selection among broilers for performance traits is resulting in locomotion problems and bone disorders, once skeletal structure is not strong enough to support body weight in broilers with high growth rates. In this study, genetic parameters were estimated for body weight at 42 days of age (BW42), and tibia traits (length, width, and weight) in a population of broiler chickens. ... more

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S. Ahmad; H.A. Sadaqat; M.H.N. Tahir; F.S. Awan
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Heritability; Longevity; Selection of females; Threshold model

We evaluated the genetic association of growth traits [weight adjusted to 205 days of age (W205), 365 days of age (W365), and 550 days of age (W550); weight gain between 205 days of age and 365 days of age (WG1) and between 365 days of age and 550 days of age (WG2)] and reproductive traits [age at first calving (AFC); first calving interval (FCI)] with stayability in the herd (STAY), ... more

E.C.A. Rizzo; F.R.A. Neto; I.D.P.S. Diaz; M.M. Dias; R.B. Costa; H.T. Ventura; H.N. Oliveira; A.J.S. Falcão
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General and specific combining ability; Genotypic correlations; Heritability; Principal component analysis; Zea mays L.

Fifty-four genotypes of maize were crossed and evaluated in the field during the crop season in February 2012 under both normal and water stress conditions. To identify the major parameters responsible for variation among genotypes, single linkage cluster analysis and principle component analysis (PCA) were carried out. Thirteen characters were studied. The PCA showed that the first six ... more

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Accuracy; Computer simulation; Detection power; Heritability; Multiple procedures; QTL mapping

The study of quantitative trait effects is of great significance for molecular marker-assisted breeding. The accuracy of quantitative trait loci (QTL) mapping is the key factor affecting marker-assisted breeding, and is extremely significant. The effect of different heritability rates (10, 30, 50, 70, and 90%) on the accuracy of QTL mapping of five recombinant inbred lines (RILs) were ... more

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The objective of the present study was to estimate genetic parameters for skin thickness (ST) and postweaning weight gain (PWG550) in Nellore cattle. Records were obtained from 152,392 Nellore animals born between 2001 and 2011. ST was measured in the posterior region of the animal’s scapula with a millimeter caliper. The animals were assigned to different contemporary groups, formed on ... more

A.M. Maiorano; M.C.S. Oliveira; J.N.S.G. Cyrillo; L.G. Albuquerque; R.A. Curi; J.A.I.I.V. Silva; A.M. Maiorano; M.C.S. Oliveira; J.N.S.G. Cyrillo; L.G. Albuquerque; R.A. Curi; J.A.I.I.V. Silva

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