Genetic And Environmental Correlations
Mostrando 1-12 de 69 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. Selection of common cashew tree genotypes in commercial growing areas in municipalities of Piauí, Brazil
Abstract The aim of this study was to estimate genetic parameters and to select promising common cashew tree genotypes in commercial growing areas in four environments in Piauí (Piracuruca - P, Barro Duro - B, Teresina - T, and Ipiranga do Piauí - I) using the mixed model approach. Genetic variances were significant for most of agromorphological and physic
Crop Breed. Appl. Biotechnol.. Publicado em: 31/10/2019
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3. Phenotypic variance of black oat growing in crop seasons reveals genetic effects predominance
Abstract: This work aimed to determine variance components and genetic parameters, as well as phenotypic, genetic and environmental correlations among black oat (Avena strigosa) families grown in different crop season. Seventy-six black oat families and three controls (BRS Madrugada, BRS Centauro, BRS 139 Neblina) were evaluated in two crop seasons (2016 and
An. Acad. Bras. Ciênc.. Publicado em: 23/09/2019
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4. Genetic parameters and agronomic characterization of elite barley accessions under irrigation in the Cerrado
ABSTRACT. There is a demand for barley cultivars that are suitable for the malt industry as well as genotypes that are stable and better adapted for irrigation in the Cerrado. This study aimed to estimate the genetic parameters by assessing 69 barley genotypes from different countries, from 2012 to 2014, under irrigation in the Cerrado. Six agronomic charact
Acta Sci., Agron.. Publicado em: 13/06/2019
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5. UTILIZAÇÃO DE MODELOS DE REGRESSÃO ALEATÓRIA PARA OBTENÇÃO DE PARÂMETROS GENÉTICOS DE BOVINOS DA RAÇA TABAPUÃ
Resumo Este trabalho utilizou 28.643 registros de pesos, do nascimento aos 660 dias de idade, de 6.471 animais da raça Tabapuã para estimar componentes de variância, covariância e parâmetros genéticos, utilizando o modelo de regressão aleatória. Foi utilizado algoritmo de busca AIREML através do método da máxima verossimilhança restrita pelo prog
Ciênc. anim. bras.. Publicado em: 10/06/2019
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6. 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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7. Infrared thermography as a method for evaluating the heat tolerance in dairy cows
ABSTRACT The objective of this study was to determine whether infrared thermography is a useful tool for the recognition of dairy cows in a state of thermal heat stress, as well as to identify the best region of the animal to be evaluated for this recognition. Physiological variables, including rectal temperature, respiratory frequency, cardiac frequency, an
R. Bras. Zootec.. Publicado em: 2017-05
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8. The correlation between the central carbon metabolic flux distribution and the number of shared enzyme regulators in Saccharomyces cerevisiae
The central carbon metabolic system is the upstream energy source for microbial fermentation. In addition, it is a master switch for increasing the production of metabolites and an important part of the microbial metabolic network. Investigation into the relationship between genes, environmental factors, and metabolic networks is a main focus of systems biol
Braz. arch. biol. technol.. Publicado em: 06/05/2016
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9. Genetic and environmental influence on thyroid gland volume and thickness of thyroid isthmus: a twin study
Objectives Decreased thyroid volume has been related to increased prevalence of thyroid cancer. Subjects and methods One hundred and fourteen Hungarian adult twin pairs (69 monozygotic, 45 dizygotic) with or without known thyroid disorders underwent thyroid ultrasound. Thickness of the thyroid isthmus was measured at the thickest portion of the gland in
Arch. Endocrinol. Metab.. Publicado em: 25/09/2015
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10. Genetic parameters and trends of morphometric traits of GIFT tilapia under selection for weight gain
The main factor considered in breeding programs for fish is growth, which can be assessed in terms of a gain in either weight or body measurements. This study was undertaken to evaluate the morphometric traits of GIFT strain tilapia (Oreochromis sp.) selected for weight gain. The data set used contained information on 6,650 animals. The genetic values of 8,5
Sci. agric. (Piracicaba, Braz.). Publicado em: 2014-08
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11. Genetic and environmental variance and covariance parameters for some reproductive traits of Holstein and Jersey cattle in Antioquia (Colombia)
The objective of this study was to estimate the genetic, phenotypic and environmental parameters for calving interval (CI), days open (DO), number of services per conception (NSC) and conception rate (CR) in Holstein and Jersey cattle in Antioquia (Colombia). Variance and covariance component estimates were obtained by an animal model that was solved using t
R. Bras. Zootec.. Publicado em: 2014-03
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12. Influence of environmental factors on ponderal performance and morphometric characteristics of lambs of different genetic groups from birth to weaning
The objectives of this work were to evaluate the environmental effects (age of dam, type of birth and sex of lamb) and genetic groups (Hampshire Down and Ile de France, ½ and ¾ Hampshire Down, Ile de France and Suffolk, and ½ Texel) on performance and morphometric characteristics (height, length and heart girth) of lambs; to test regressions to predict li
R. Bras. Zootec.. Publicado em: 2013-07