Results 11 to 20 of about 959,187 (267)

COMPARISON OF QUANTITATIVE GENETIC PARAMETERS [PDF]

Evolution, 1992
Shaw (1991) has described a maximum-likelihood procedure for comparing genetic covariance matrices between populations. While her efforts to expand the procedures available for quantitative genetic analyses are laudable, her discussion is incomplete in several respects. For example, consider her criticism of Dietz's matrix permutation test (Dietz, 1983)
David E, Cowley, William R, Atchley
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Estimation of quantitative genetic parameters [PDF]

Philosophical Transactions of the Royal Society B: Biological Sciences, 2005
This paper gives a short review of the development of genetic parameter estimation over the last 40 years. This shows the development of more statistically and computationally efficient methods that allow the fitting of more biologically appropriate models. Methods have evolved from direct methods based on covariances between relatives to methods based
Thompson, R., Brotherstone, S., White, I. M. S.   +2 more
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Dynamic Parameter Encoding for Genetic Algorithms [PDF]

Machine Learning, 1992
The common use of static binary place-value codes for real-valued parameters of the phenotype in Holland's genetic algorithm (GA) forces either the sacrifice of representational precision for efficiency of search or vice versa. Dynamic Parameter Encoding (DPE) is a mechanism that avoids this dilemma by using convergence statistics derived from the GA ...
Nicol N. Schraudolph, Richard K. Belew
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GENETIC CONTRIBUTION OF RAM ON LITTER SIZE IN ŠUMAVA SHEEP [PDF]

Poljoprivreda, 2015
The objective of the present study was to quantify the service sire effect in terms of (co) variance components of born and weaned lambs number and to propose models for the potential inclusion of this effect in the linear equations for breeding value ...
Jitka Schmidová, Michal Milerski , Alena Svitáková, Luboš Vostrý   +3 more
doaj   +1 more source

Patterns of genetic variation in bud flushing of Abies alba populations

iForest - Biogeosciences and Forestry, 2018
In the spring of 2007, 51 full-sib and six half-sib families of European silver fir were obtained through controlled and open pollinations from the same clones in a seed orchard.
Mihai G, Mirancea I, Birsan M-V, Dumitrescu A   +3 more
doaj   +1 more source

Variabilidade genética em clones de Eucalyptus spp. para Grajaú, estado do Maranhão. Genetic variability in clones of Eucalyptus spp. for Grajaú, state of Maranhão. [PDF]

Revista do Instituto Florestal, 2017
Esta pesquisa teve por objetivo a seleção de clones de eucaliptos em teste em Grajaú-MA, Brasil, visando ao aumento na produtividade. Os caracteres avaliados foram diâmetro à altura do peito – DAP (cm) e altura – ALT (m).
Evandro Vagner TAMBARUSS, Fernanda Bortolanza PEREIRA, Vinícius André AZEVEDO, Fabiana Schmidt Bandeira PERES, Andrea Nogueira DIAS, Rodrigo de Andrade FURLAN   +5 more
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Estimation of quantitative genetic parameters [PDF]

Proceedings of the Royal Society B: Biological Sciences, 2008
This paper gives a short review of the development of genetic parameter estimation over the last 40 years. The need to analyse genetic processes in both animal selection experiments and animal breeding improvement programmes motivated the majority of this work.
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Black bean genotypes for adaptability, stability, and productivity via mixed models for the state of Rio de Janeiro, Brazil [PDF]

Ciência Rural
: The study of adaptability, stability, and productivity is essential for selecting and recommending superior genotypes. This fact is particularly the case for the introduction of common bean cultivars in Rio de Janeiro, Brazil, whose production is ...
Alexandre Gomes de Souza, Rogério Figueiredo Daher, Maxwel Rodrigues Nascimento, Benedito Fernandes de Souza Filho, Leonardo Cunha Melo, Geraldo de Amaral Gravina, Moisés Ambrósio, Josefa Grasiela Silva Santana, Ana Kesia Faria Vidal, Raiane Mariani Santos, Cleudiane Lopes Leite, João Esdras Calaça Farias, Rafael de Souza Freitas, Richardson Sales Rocha   +13 more
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Editing and modeling of milk production data for genetic evaluation of Murrah buffaloes [PDF]

Pesquisa Agropecuária Brasileira, 2017
: The objective of this work was to assess the effect of editing and modeling of milk production data for genetic evaluation of Murrah buffaloes. Six strategies for evaluating milk production were analyzed: observed milk production (OMP); adjustment of ...
Andréa Carolina Santos de Souza, Marcos Paulo Gonçalves de Rezende, Paulo Luiz Souza Carneiro, Bárbara Machado Campos, Carlos Henrique Mendes Malhado   +4 more
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Cosmological Parameter Estimation with Genetic Algorithms

Universe, 2023
Genetic algorithms are a powerful tool in optimization for single and multimodal functions. This paper provides an overview of their fundamentals with some analytical examples. In addition, we explore how they can be used as a parameter estimation tool in cosmological models to maximize the likelihood function, complementing the analysis with the ...
Ricardo Medel-Esquivel, Isidro Gómez-Vargas, Alejandro A. Morales Sánchez, Ricardo García-Salcedo, José Alberto Vázquez   +4 more
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