Research Article

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Crop Production; Edible Grain; Genotype; Phenotype; Quantitative Trait, Heritable; seeds; Soybeans

The goals of this research were to evaluate the phenotypic and genotypic correlations between agronomic traits, to perform path analysis, having as main character grain yield, and to identify indirect selection criteria for grain yield. The experiment was carried out in an experimental area located at Capim Branco farm, which belongs to Federal University of Uberlândia, during the growing ... more

B.Q.V. Machado; A.P.O. Nogueira; O.T. Hamawaki; G.F. Rezende; G.L. Jorge; I.C. Silveira; L.A. Medeiros; R.L. Hamawaki; C.D.L. Hamawaki
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Breeding; Crosses, Genetic; Quantitative Trait, Heritable; Zea mays

The REML/BLUP statistics are analyses that can be used as selective criteria in the routine of maize breeding programs. The present study aims to determine the genetic potential in crosses of landrace populations applying the REML/BLUP methodology, and to identify populations for the synthesis of new populations and intrapopulation selection for family farming systems, as well as genetic ... more

D. Baretta; M. Nardino; I.R. Carvalho; A.J. de Pelegrin; M. Ferrari; V.J. Szareski; W.S. Barros; V.Q. de Souza; A.C. de Oliveira; L.C. da Maia
06/29/2017
Animals; Cattle; Female; Genome-wide association study; Genotype; Lactation; Longevity; Milk; Quantitative trait loci; Quantitative Trait, Heritable; Reproduction; Selective breeding

In this study, we estimated the genetic parameters and identified the putative quantitative trait loci (QTL) associated with the length of productive life (LPL), days open (DO), and 305-day milk yield for the first lactation (FM305) of crossbred Holstein dairy cattle. Data comprising 4,739 records collected between 1986 and 2004 were used to estimate the variance-covariance components using ... more

P. Saowaphak; M. Duangjinda; S. Plaengkaeo; R. Suwannasing; W. Boonkum
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Hypocotyl; Models, Genetic; Neural Networks, Computer; Phenotype; Plant breeding; Quantitative Trait, Heritable; Soybeans

Classification using a scale of visual notes is a strategy used to select erect bean plants in order to improve bean plant architectures. Use of morphological traits associated with the phenotypic expression of bean architecture in classification procedures may enhance selection. The objective of this study was to evaluate the potential of artificial neural networks (ANNs) as auxiliary tools ... more

V.Q. Carneiro; G.N. Silva; C.D. Cruz; P.C.S. Carneiro; M. Nascimento; J.E.S. Carneiro
06/29/2017
Adaptation, Physiological; environment; Gene-Environment Interaction; Genetic variation; Genotype; Plant breeding; Quantitative Trait, Heritable; Saccharum; Selection, Genetic

The recommendation of sugarcane clones depends on several factors, as the response or performance of the clones over different cuts or harvests. The clone by harvest interaction might be difficult to identify superior clones in the final stages of the sugarcane breeding program. Thus, the objective of this study was to investigate and describe the implications of the genotype by harvest ... more

D.N.A. Cabral; J.A.R. Nunes; P.D.S. Cabral; J. Zuchi; A.J. Raizer; T.O.M. De Paula
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Droughts; environment; genomic instability; Hybridization, Genetic; Models, Genetic; Plant breeding; Quantitative Trait, Heritable; Stress, Physiological; Zea mays

In several crops, the water deficit is perhaps the main limiting factor in the search for high yields. The objective of this study was to evaluate the phenotypic stability of maize hybrids in environments with and without water restriction using the analytical factor (AF) approach. We evaluated 171 maize hybrids in 14 environments, divided into environments with (A1, A2, A3, A4, A5, A6, and A7 ... more

A.O. Santos; J.J. Nuvunga; C.P. Silva; L.P.M. Pires; R.G. Von Pinho; L.J.M. Guimarães; M. Balestre
07/06/2017
Animals; Bayes Theorem; Body weight; Cattle; Female; male; maternal inheritance; Quantitative Trait, Heritable; Selective breeding

This study was carried out to investigate (co)variance components and genetic parameters for growth traits in beef cattle using a multi-trait model by Bayesian methods. Genetic and residual (co)variances and parameters were estimated for weights at standard ages of 120 (W120), 210 (W210), 365 (W365), and 450 days (W450), and for pre- and post-weaning daily weight gain (preWWG and postWWG) in ... more

F.B. Lopes; J.L. Ferreira; R.B. Lobo; G.J.M. Rosa
08/17/2017
Brazil; Ecosystem; Genetic variation; Manihot; Quantitative Trait, Heritable

Genetic variability of cassava (Manihot esculenta Crantz) in Brazil is wide, being this the result of natural and cultural selection during pre- and post-domestication of the species in different environments. Given the number of species of the genus found in the region (38 of a total of 98 species), the central region of Brazil was defined as the primary center of cassava diversity. Therefore ... more

B.W. Zago; M.A.A. Barelli; E.S.S. Hoogerheide; C.L. Corrêa; G.I.S. Delforno; C.J. da Silva
08/17/2017
Gene-Environment Interaction; Genotype; Gossypium; Models, Genetic; Quantitative Trait, Heritable

Cotton produces one of the most important textile fibers of the world and has great relevance in the world economy. It is an economically important crop in Brazil, which is the world's fifth largest producer. However, studies evaluating the genotype x environment (G x E) interactions in cotton are scarce in this country. Therefore, the goal of this study was to evaluate the G x E interactions ... more

R.S. Alves; P.E. Teodoro; F.C. Farias; F.J.C. Farias; L.P. Carvalho; J.I.S. Rodrigues; L.L. Bhering; M.D.V. Resende
08/17/2017
Edible Grain; Genotype; Inbreeding; Models, Genetic; Plant breeding; Quantitative Trait, Heritable; Selection, Genetic; Selective breeding; Vigna

The aim of this study was to estimate the genotypic gain with simultaneous selection of production, nutrition, and culinary traits in cowpea crosses and backcrosses and to compare different selection indexes. Eleven cowpea populations were evaluated in a randomized complete block design with four replications. Fourteen traits were evaluated, and the following parameters were estimated: ... more

D.G. Oliveira; M.M. Rocha; K.J. Damasceno-Silva; F.V. Sá; L.R.L. Lima; M.D.V. Resende

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