Research Article

Related GMR Articles

11/24/2015
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
10/28/2015
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

R.W. Muhammad; A. Qayyum; A. Hamza; M.Q. Ahmad; N.S. Naseer; S. Liaqat; B. Ahmad; W. Malik; E. Noor
10/21/2015
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

C.F. Su; Z.B. Liu; Y.G. Li
02/19/2016
Bayesian analysis; Beef cattle; Genetic correlation; Heritability; Postweaning weight gain; Skin thickness

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
10/17/2016
Acrocomia aculeata; Biofuel; Genetic diversity; Genetic parameters; Heritability; Plant genetic resource

Macaw palm (Acrocomia aculeata) is a promising species for use in biofuel production, and establishing breeding programs is important for the development of commercial plantations. The aim of the present study was to analyze genetic diversity, verify correlations between traits, estimate genetic parameters, and select different accessions of A. ... more

S.M. Coser; S.Y. Motoike; T.R. Corrêa; T.P. Pires; M.D.V. Resende
11/21/2016
Gain from selection; Heritability; Phaseolus vulgaris; Simultaneous selection

Slow seed coat darkening is desirable in common bean cultivars and genetic parameters are important to define breeding strategies. The aims of this study were to estimate genetic parameters for plant architecture, grain yield, grain size, and seed-coat darkening in common bean; identify any genetic association among these traits; and select lines that associate ... more

R.C. Alvares; F.C. Silva; L.C. Melo; P.G.S. Melo; H.S. Pereira; R.C. Alvares; F.C. Silva; L.C. Melo; P.G.S. Melo; H.S. Pereira
05/16/2019
Heritability; Inheritance pattern; Phaseolus vulgaris; Selection index

The development of common bean cultivars with biofortified grains for macrominerals and a seed coat color pattern that satisfies consumer preference is a new demand of breeding programs. However, combined selection for seed coat color and macromineral concentrations in common beans is unprecedented. The objectives of this work were to obtain estimates of genetic ... more

N.D. Ribeiro; H.C. Mezzomo; G.Gdos Santos
05/24/2019
Berries; Heritability; Plant breeding; RELM/BLUP; Rubus idaeus; Small fruits

Raspberry is a berry crop of great economic importance, and its cultivation has expanded worldwide. Information on the genetic parameters of raspberry for use in breeding programs is currently limited. We used Restricted Maximum Likelihood (REML) and Best Linear Unbiased Prediction (BLUP) to estimate variance components and predict genetic parameters for ... more

P.M. Marchi; I.R. Carvalho; D. Höhn; B. Carra; V.J. Szareski; M. Dini; M. Vizzotto; L.E.C. Antunes
08/31/2020
Backcrossing; Brachitic plants; Generation means; Genetic components of variance; Heritability

Understanding the genetic control of internode length is essential to develop more compact winter squash genotypes. Our objective was to elucidate the genetic control of internode length before and after emergence of the first female flower in winter squash, Cucurbita moschata. This was done by estimating the linear and quadratic genetic components and ... more

C.F. Almeida; R.S. Gomes; M. Junior; R.L. Oliveira; R.D.F. Laurindo; R.R. Chagas; D.J.H. da Silva
08/30/2020
Allium cepa; Genotypes; Heritability; Path analysis

The cultivation of onion in Brazil has a relevant socioeconomic contribution. Despite the potential, there are few onion breeding programs for tropical conditions. One of the major obstacles is related to the complexity during the selection steps, since in onion, quantitative characters and low heritability predominate. For this reason, the purpose of this study ... more

V.C.V. Segundo; C.S. de Oliveira; R. Innecco; J.M.Q. Luz; J.A. de Freitas; G.M. Maciel; A.P.O. Nogueira; A.C.S. Siquieroli

Pages