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Ciência Florestal
Centro de Pesquisas Florestais - CEPEF, Departamento de Ciências Florestais - DCFL, Programa de Pós Graduação em Engenharia Florestal - PPGEF
ISSN: 0103-9954
EISSN: 0103-9954
Vol. 23, No. 2, 2013, pp. 531-538
Bioline Code: cf13049
Full paper language: English
Document type: Research Article
Document available free of charge

Ciência Florestal, Vol. 23, No. 2, 2013, pp. 531-538

 pt PREDICCIÓN BAYESIANA DE PARÁMETROS GENÉTICOS EN CLONES DE Eucalyptus globulus check for this species in other resources BAJO CONDICIONES DE SUPLEMENTO HÍDRICO
Mora, Freddy; Rubilar, Rafael; Emhart, Veronica Ingrid & Saavedra, Javier

Resumo

Se realizó un análisis Bayesiano de parámetros genéticos del crecimiento en 29 clones de EUCALYPTUS GLOBULUS check for this species in other resources de doce meses de edad, en el sur de Chile. Se consideraron dos condiciones ambientales contrastantes en cuanto a la disponibilidad hídrica: 1. Sin irrigación, y 2. Las plantas se irrigaron con un sistema localizado de riego. Para el análisis Bayesiano se utilizó el algoritmo de Gibbs en un modelo de interacción clonambiente. Los valores de heredabilidad fueron altos en la condición de riego (moda a posteriori de H2=0,41, 0,36 y 0,39 para la altura, diámetro y área basal, respectivamente), en tanto que en la situación sin riego, los valores de las heredabilidades fueron significativamente más bajos; confirmado por medio de los intervalos de credibilidad Bayesianos (95 % de probabilidad). La moda a posteriori de la correlación genética entre sitios fue positiva y alta para las tres características (r=0,7, 0,65 y 0,8, para altura, diámetro y área basal, respectivamente), y de acuerdo al intervalo de credibilidad, esta correlación fue estadísticamente diferente de cero, indicando una interacción no significativa.

Palavras-chave
riego; crecimiento; heredabilidad; valores genéticos

 
 en BAYESIAN PREDICTION OF GENETIC PARAMETERS IN EUCALYPTUS GLOBULUS check for this species in other resources CLONES UNDER WATER SUPPLY CONDITIONS
Mora, Freddy; Rubilar, Rafael; Emhart, Veronica Ingrid & Saavedra, Javier

Abstract

A Bayesian analysis of genetic parameters for growth traits at twelve months after planting was carried out in twenty nine Eucalyptus globulus check for this species in other resources 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 Gibbs sampling algorithm in a clone-environment interaction model. Heritability values were high in the water supply condition (posterior mode: H2=0.41, 0.36 and 0.39 for height, diameter and sectional area, respectively), while in the environment without irrigation, the heritabilities were significantly lower, which was confirmed by the Bayesian credible intervals (95 % probability). The posterior mode of the genetic correlation between sites was positive and high for all traits (r=0.7, 0.65 and 0.8, for height, diameter and sectional area, respectively) and according to the credible interval, it was statistically different from zero, indicating a non-significant interaction.

Keywords
irrigation; growth traits; heritability; breeding values

 
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