Heritability
Mostrando 37-48 de 482 artigos, teses e dissertações.
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37. Selection of Eucalyptus grandis families across contrasting environmental conditions
Abstract The objective was to select productive and stable E. grandis families across contrasting sites in Brazil and Uruguay. Survival and growth of 130 open pollinated families were evaluated three years after planting. Survival ranged from 28 to 89% and mean annual increment from 20.5 to 48.4 m3ha- y-1. Low productivity in one site was attributed to unusu
Crop Breed. Appl. Biotechnol.. Publicado em: 11/04/2019
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38. Agronomic evaluation of a Hancornia speciosa Gomes germplasm collection from the Brazilian Cerrado
Abstract Hancornia speciosa Gomes is a fruit tree native to Brazil with potential for use in cropping systems. The objective of this study was to characterize accessions of a germplasm collection by evaluating agronomic traits. The collection was planted in 2005, in an experiment with 57 progenies and four replications, totaling 192 individual accessions fro
Crop Breed. Appl. Biotechnol.. Publicado em: 11/04/2019
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39. Genetic parameters in agronomic characters for selection of superior lineages of Ricinus communis L
RESUMO: O conhecimento da variabilidade e herdabilidade dos caracteres agronômicos de interesse auxiliam na seleção de materiais superiores. Desta forma, objetivou-se avaliar os parâmetros genéticos de caracteres agronômicos em linhagens de mamoneira e quantificar as correlações genéticas entre eles. O trabalho foi desenvolvido na área experimental
Cienc. Rural. Publicado em: 11/02/2019
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40. Selection and genetic parameters for interpopulation hybrids between kouilou and robusta coffee
ABSTRACT Selection of hybrid coffee plants coming from crosses between divergent populations is particularly relevant for the success of breeding programs. This study aimed to outline the best selection strategy in a hybrid population of Coffea canephora var. kouilou and robusta by estimating intrapopulation genetic parameters. Twenty full-sib progenies obta
Bragantia. Publicado em: 11/02/2019
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41. Estimates of genetic parameters between and within black oat populations
ABSTRACT The aims of this study were to characterize black oat populations by estimating between- and within-populations variance components and genetic parameters, as well as to distinguish the populations using multivariable statistics. The experiment was carried out in randomized blocks design with three repetitions, with 14 black oat populations collecte
Bragantia. Publicado em: 11/02/2019
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42. Estimação de parâmetros genéticos para características de pesos e pesos metabólicos na desmama e pós-desmama em bovinos Brahman
RESUMO Objetivou-se estimar herdabilidades e correlações de características ponderais com 36.505 animais, da Associação Brasileira de Criadores Zebu. O modelo incluiu efeito genético direto, materno, ambiente permanente, residual - aleatórios e efeitos de grupos contemporâneos - fixos. Os parâmetros foram estimados pelo método de máxima verossimil
Arq. Bras. Med. Vet. Zootec.. Publicado em: 2019-02
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43. Direct and maternal annual genetic changes for selected traits at weaning and yearling in beef cattle
ABSTRACT. 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
Acta Sci., Anim. Sci.. Publicado em: 07/01/2019
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44. Genetic control of aluminum tolerance in tropical maize germplasm
ABSTRACT Aluminum (Al) toxicity is the most limiting factor to maize crop productivity in acid soils. Therefore, the understanding of inheritance of Al tolerance in maize is important for the developmentof more adequate procedures for Al tolerant genotypes selection. In this sense, the objectives of this study were to determine the inheritance, and the gener
Bragantia. Publicado em: 07/01/2019
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45. Development and selection of super-sweet corn genotypes (sh2) through multivariate approaches
ABSTRACT The aim of the present study was to investigate relations among ten traits in super-sweet corn genotypes assessed by means of simple correlation, path and canonical variable analyses, as well as to investigate the relative importance of such traits to the super-sweet corn breeding program developed at Darcy Ribeiro Northern Fluminense State Universi
Bragantia. Publicado em: 25/10/2018
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46. Genetic parameters for type score traits and milk production in Brazilian Jersey herds
ABSTRACT This study aimed to estimate the heritability coefficients for ten functional type traits and milk production in the Jersey breed in Brazil, besides the genetic and phenotypic correlations between them. The present study utilised data from 1,567 records of linear type traits, including stature (ST), body depth (BD), loin strength (LS), rump width (R
R. Bras. Zootec.. Publicado em: 22/10/2018
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47. Genetic parameters for milk traits, somatic cell, and total bacteria count scores in Brazilian Jersey herds
ABSTRACT This study aimed to estimate the heritability of milk yield (MY), fat percent (F%), fat yield (FY), protein percent (P%), protein yield (PY), somatic cell score (SCS), and total bacterial count score (TBCS) as well as to estimate the genetic correlations among these traits, using a dataset from 5,918 lactations of Jersey cows in Brazil. The covarian
R. Bras. Zootec.. Publicado em: 22/10/2018
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48. Genetic parameters and selection of macaw palm (Acrocomia aculeata) accessions: an alternative crop for biofuels
Abstract This study aimed to estimate the parameters related to the genetic control of the physical characteristics of the fruits, oil content, and oil yield, and to proceed with the selection of macaw palm accessions. Forty-four macaw palm accessions of the active germplasm collection of the Federal University of Viçosa were collected for the evaluation of
Crop Breed. Appl. Biotechnol.. Publicado em: 2018-09