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| Moraes,Marcos Santana; Rocha,Rodrigo Barros; Teixeira,Alexsandro Lara; Espindula,Marcelo Curitiba; Silva,Camila Andrade; Lunz,Aureny Maria Pereira. |
| ABSTRACT: The development of Coffea canephora cultivars is based on the characterization of genotype × environment interaction, which is interpreted to quantify the differential behavior of clones at different cultivation sites. The objective of this research was to study the genotype x environment interaction aiming to select clones of broad and specific adaptation to different environments of the Western Amazon. Twelve clones with hybrid characteristics of the botanical varieties Conilon and Robusta and four open pollinated clones, had their performance evaluated in comparison with four controls. The genotype × environment interaction was interpreted based on the environmental quality index, the non-parametric estimator of Lin and Binns, 1988 and on the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: G×E interaction; Genetic progress; Coffee. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782020000100402 |
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| Boligon, Arione Augusti; Vicente, Isadora dos Santos; Roso, Vanerlei Mozaquatro; Souza, Fabio Pablos de. |
| Heritability and direct and maternal genetic changes were estimated in Nellore cattle for the following traits: birth to weaning weight gain (BWG), weaning to yearling weight gain (YWG), weaning conformation (WC), weaning precocity (WP), weaning muscling (WM), yearling conformation (YC), yearling precocity (YP), yearling muscling (YM) and yearling scrotal circumference (SC). Direct and maternal heritability for weaning traits were 0.21±0.03 and 0.13±0.01 (BWG); 0.19±0.03 and 0.07±0.01 (WC); 0.22±0.03 and 0.07±0.01 (WP); 0.20±0.03 and 0.07±0.01 (WM), respectively. For yearling traits, direct heritability were 0.19±0.04 (YWG); 0.32±0.05 (YC); 0.37±0.05 (YP); 0.38±0.05 (YM) and 0.41±0.04 (SC). Positive and significant direct genetic changes (p < 0.05) were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Genetic progress; Nellore cattle; Scrotal circumference; Visual scores; Weight gain.. |
| Ano: 2018 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/42572 |
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| Barbosa, Ana Carla Borges; Oliveira, Iomar Ramos; Malhado, Ana Claudia Mendes; Carneiro, Paulo Luiz Sousa; Martins Filho, Raimundo; Malhado, Carlos Henrique Mendes. |
| The semi-arid region of Brazil represents approximately 57% of the northeastern territory. The main economic activity in this region is agriculture and livestock, in most cases, using traditional technologies. However, there is little published information currently available on cattle-raising in this part of Brazil. The objective of this study was to estimate genetic parameters and trends for productive and reproductive traits of Nellore cattle raised in semi-arid region of northeastern Brazil. Data were collected on weight-adjusted at 205 (W205), 365 (W365) and 550 (W550) days of life, age at first calving (AFC), calving interval (CI) and scrotal circumference (SC) at 550 days of life of cattle born between 1965 and 2011. Estimates of covariance and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Genética e Melhoramento Animal age at first calving; Genetic progress; Genetic parameters; Heritability.. |
| Ano: 2015 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/28094 |
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| Dornelles,Mariana de Almeida; Araújo,Ronyere Olegário de; Everling,Dionéia Magda; Weber,Tomás; Lopes,Jader Silva; Pacheco,Paulo Santana; Breda,Fernanda Cristina; Rorato,Paulo Roberto Nogara. |
| The objective of this research was to compare the magnitude of genetic parameters (coefficients of heritability and genetic correlation) as estimated by the Restricted Maximum Likelihood (REML) method and Bayesian Inference, and to estimate the genetic and phenotypic trends to the traits height at the withers (HW24) and weight at 24 months of age (W24). The average heritability estimated by Bayesian Inference to HW24 was 0.47, and it was lower than that obtained by REML bi-trait analysis (0.52); however, the value estimated to W24 (0.39) was higher than that obtained by REML bi-trait analysis (0.38). The genetic correlation estimate between W24 and HW24 traits obtained by the REML method (0.66) was lower than that obtained by the Bayesian Inference Method... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Genetic correlation; Genetic progress; Variance components. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000600015 |
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| Araújo,Ronyere Olegário de; Rorato,Paulo Roberto Nogara; Weber,Tomás; Everling,Dionéia Magda; Lopes,Jader Silva; Dornelles,Mariana de Almeida. |
| Genetic parameters and genetic and phenotypic trends were estimated for weight at weaning (WW) and visual scores (VS) of conformation (C), precocity (P), musculature (M) and navel (N) for Angus × Nellore crossbred calves. It was used 39,676 records from pre-weaning phase of animals born from 1992 to 2002 in mid-western, southeastern and southern Brazil. The components of covariance were estimated using REML, in animal model, considering as random the maternal and direct additive genetic effects, and as fixed, the effects of contemporaneous group, the genetic group of the animal and of the cow, and as covariates the age of the calf at weaning and the age of the cow at calving, both on days and with linear and quadratic effects, besides direct (DH) and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Beef cattle; Cross-breeding; Genetic evaluation; Genetic progress; Morphologic evaluation. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010001100012 |
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| Leite,Monik Evelin; Dias,Juliana Andrade; Souza,Danuza Araujo de; Alves,Filipe Couto; Pinheiro,Lucas Rezende; Santos,João Bosco dos. |
| ABSTRACT White mold, caused by Sclerotinea sclerotiorum (Lib.) de Bary is one of the most important diseases of the common bean (Phaseolus vulgaris L.) worldwide. Physiological resistance and traits related to disease avoidance such as architecture contribute to field resistance. The aim of this study was to verify the efficiency of recurrent selection in physiological resistance to white mold, “Carioca” grain type and upright habit in common bean. Thirteen common bean lines with partial resistance to white mold were intercrossed by means of a circulant diallel table, and seven recurrent selection cycles were obtained. Of these cycles, progenies of the S0:1, S0:2 and S0:3 generations of cycles III, IV, V and VI were evaluated. The best (8 to 10) progenies... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sclerotinia sclerotiorum; Phaseolus vulgaris; Genetic resistance; Genetic progress. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162016000100071 |
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