Heritabilities
Mostrando 1-12 de 109 artigos, teses e dissertações.
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1. ACCURACY OF GENETIC PARAMETERS ESTIMATION AND PREDICTION OF GENOTYPIC VALUES IN EUCALYPTUS USING DIFFERENT PLOT TYPES
ABSTRACT A suitable experimental design should control the environmental effect and be capable of discriminating genotypes. Two clonal tests of Eucalyptus were planted side by side in a randomized block design with the same 32 treatments under two different plot designs. The first trial was designed with five plants per plot (linear plot, LP) and six block r
CERNE. Publicado em: 2020-12
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2. Procedures for identification of superior progenies in successive generations of evaluation in common bean
ABSTRACT: When breeding the common bean in Brazil, the best progenies are chosen, normally, from solely the generation under analysis at the conclusion of the evaluation, without considering what occurred in the past. However, a number of recently published studies show that if an evaluation were to consider all relevant generations, the gain from selection
Sci. agric. (Piracicaba, Braz.). Publicado em: 01/07/2019
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3. Estimation of genetic parameters for weight traits and Kleiber Index in a Brahman cattle population
ABSTRACT: Interest in improving feed efficiency of cattle has been increasing. The residual feed intake (RFI), the most commonly used measurement of feed efficiency, is expensive and can only be used in a small number of animals. The Kleiber Index has also been proposed to measure RFI. In this study, we estimated genetic parameters for the Kleiber Index aver
Sci. agric. (Piracicaba, Braz.). Publicado em: 30/05/2019
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4. Genotype x Environment Interaction for reproductive traits in brazilian Nellore breed cattle
RESUMO O presente estudo teve como objetivo avaliar o efeito da interação genotipo-ambiente (IGA) para as características perímetro escrotal mensurado em diferentes idades, 365 (PE365), 450 (PE450) e 550 (PE550) dias de idade, e da idade ao primeiro parto (IPP) para animais da raça Nelore criados em diferentes regiões do Brasil. Para a avaliação fora
Rev. bras. saúde prod. anim.. Publicado em: 07/02/2019
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5. Estimation of genetic parameters and selection for rooting capacity in peach
Abstract One of the most important criteria in the improvement of rootstocks is easiness of propagation. The objective of the present study was to verify the existence of genetic variability and the possibility of gains with selection in the rooting capacity among peach genotypes. Seventy-seven genotypes of peach belonging to five F3 families were evaluated.
Crop Breed. Appl. Biotechnol.. Publicado em: 2018-09
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6. Genetic evaluation and selection in Jatropha curcas L.
Abstract J. curcas (physic nut) is one of the most promising oilseeds for biofuel production and the knowledge about genetic parameter estimates is important for its breeding. Here, we evaluated 121 families, from 48 to 60 months of age, aiming genetic evaluation and selection. The trial was set up in an 11 x 11 lattice design, with three replications and 4-
Crop Breed. Appl. Biotechnol.. Publicado em: 2018-04
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7. Eggshell Qualities as Indicative of Eggshell Strength for Layer Selection
ABSTRACT The study aimed at investigating which of four traits is the most representative of eggshell strength (destructive eggshell thickness measurement, eggshell weight, egg specific gravity, ultrasonic measurement of eggshell thickness) and could be used for selection purposes. To date, investigations focused mostly on pairwise (eggshell strength vs. ano
Rev. Bras. Cienc. Avic.. Publicado em: 2018-03
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8. Evaluation of different selection indices combining Pilodyn penetration and growth performance in Eucalyptus clones
Abstract The present study aimed to evaluate the selection indices efficiency for Pilodyn penetration combined with growth traits in Eucalyptus clones. It was carried out experiments in a randomized block design, with single tree plots and 30 replications. Diameter at breast height (DBH), total height (TH), and Pilodyn penetration as an indicator of basic de
Crop Breed. Appl. Biotechnol.. Publicado em: 2017-09
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9. Genetic associations between reproductive and linear-type traits of Holstein cows in Brazil
ABSTRACT This study aimed to estimate heritability, genetic, and residual correlations between reproductive traits such as age at first calving, calving interval, dry period, and first service period and linear type traits measured in Holstein cows born between the years 1990 and 2008 in Brazil. The (co)variance components were estimated by restricted maximu
R. Bras. Zootec.. Publicado em: 2017-02
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10. Resistance to Phytophthora infestans in Solanum tuberosum landraces in Southern Chile
The objective of this work was to evaluate the resistance of 30 Chilean potato landraces to natural infection by Phytophthora infestans during two growing seasons in Southern Chile. Control cultivars were 'Désirée', which has moderate susceptibility to late blight, and 'Karú', which is characterized by moderate resistance to the disease. The response of t
Trop. plant pathol.. Publicado em: 2014-08
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11. PREDICCIÓN BAYESIANA DE PARÁMETROS GENÉTICOS EN CLONES DE Eucalyptus globulus BAJO CONDICIONES DE SUPLEMENTO HÍDRICO
ABSTRACT A Bayesian analysis of genetic parameters for growth traits at twelve months after planting was carried out in twenty nine Eucalyptus globulus clones in southern Chile. Two different environmental conditions were considered: 1) Non-irrigation and; 2) Plants were irrigated with a localized irrigation system. The Bayesian approach was performed using
Ciênc. Florest.. Publicado em: 2013-06
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12. Genetic parameters of agronomic characters in Panicum maximum hybrids
This study was carried out with the objective of estimating the genetic parameters of agronomic traits in Panicum maximum hybrids. Genotypes obtained from the crosses between the sexual plants S10 and S12 and cultivars Tanzania and Mombasa were evaluated. The design was an incomplete blocks design with two replicates (clones) and 33 blocks. Each block was co
R. Bras. Zootec.. Publicado em: 2013-04