Genetic parameters of growth and survival in Acacia saligna shrubs

Acacia species have valuable agronomic characteristics, such as the tolerance to unfavorable environmental conditions. In this study, genetic parameters and selection response in Acacia saligna shrubs were investigated in two arid environments of northern Chile: Cuz-Cuz and El Tangue. The quantitati...

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Autores principales:	Mora,Freddy, Perret,Sandra, Scapim,Carlos Alberto, Arnhold,Emmanuel
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal 2010
Materias:	Drylands fodder production Acacia saligna multipurpose trees Bayesian analysis
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202010000200001
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spelling	oai:scielo:S0718-162020100002000012010-10-14Genetic parameters of growth and survival in Acacia saligna shrubsMora,FreddyPerret,SandraScapim,Carlos AlbertoArnhold,Emmanuel Drylands fodder production Acacia saligna multipurpose trees Bayesian analysis Acacia species have valuable agronomic characteristics, such as the tolerance to unfavorable environmental conditions. In this study, genetic parameters and selection response in Acacia saligna shrubs were investigated in two arid environments of northern Chile: Cuz-Cuz and El Tangue. The quantitative traits were assessed in 5 year-old shrubs. A Bayesian approach, implemented using Gibbs sampling algorithm, was used in the data analysis. The tree survival was 87.3% and 81.8% in Cuz-Cuz and El Tangue, respectively, confirming the potential of A. saligna in northern Chile. The estimates of posterior mode of the heritability ranged from h2=0.13 (survival) to h2=0.25 (shrub crown diameter). Estimated genetic gain (individual tree selection) ranged from 6 to 14% (selection intensity of 20%). Bayesian credible intervals (p=95%) for genotype-environment correlations included zero, indicating a significant interaction for survival, crown diameter and height. Shrub selection in multipurpose planting will depend on optimizing economical traits by selecting genotypes that perform well on a particular environment.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería ForestalCiencia e investigación agraria v.37 n.2 20102010-08-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202010000200001en10.4067/S0718-16202010000200001
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Drylands fodder production Acacia saligna multipurpose trees Bayesian analysis
spellingShingle	Drylands fodder production Acacia saligna multipurpose trees Bayesian analysis Mora,Freddy Perret,Sandra Scapim,Carlos Alberto Arnhold,Emmanuel Genetic parameters of growth and survival in Acacia saligna shrubs
description	Acacia species have valuable agronomic characteristics, such as the tolerance to unfavorable environmental conditions. In this study, genetic parameters and selection response in Acacia saligna shrubs were investigated in two arid environments of northern Chile: Cuz-Cuz and El Tangue. The quantitative traits were assessed in 5 year-old shrubs. A Bayesian approach, implemented using Gibbs sampling algorithm, was used in the data analysis. The tree survival was 87.3% and 81.8% in Cuz-Cuz and El Tangue, respectively, confirming the potential of A. saligna in northern Chile. The estimates of posterior mode of the heritability ranged from h2=0.13 (survival) to h2=0.25 (shrub crown diameter). Estimated genetic gain (individual tree selection) ranged from 6 to 14% (selection intensity of 20%). Bayesian credible intervals (p=95%) for genotype-environment correlations included zero, indicating a significant interaction for survival, crown diameter and height. Shrub selection in multipurpose planting will depend on optimizing economical traits by selecting genotypes that perform well on a particular environment.
author	Mora,Freddy Perret,Sandra Scapim,Carlos Alberto Arnhold,Emmanuel
author_facet	Mora,Freddy Perret,Sandra Scapim,Carlos Alberto Arnhold,Emmanuel
author_sort	Mora,Freddy
title	Genetic parameters of growth and survival in Acacia saligna shrubs
title_short	Genetic parameters of growth and survival in Acacia saligna shrubs
title_full	Genetic parameters of growth and survival in Acacia saligna shrubs
title_fullStr	Genetic parameters of growth and survival in Acacia saligna shrubs
title_full_unstemmed	Genetic parameters of growth and survival in Acacia saligna shrubs
title_sort	genetic parameters of growth and survival in acacia saligna shrubs
publisher	Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal
publishDate	2010
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202010000200001
work_keys_str_mv	AT morafreddy geneticparametersofgrowthandsurvivalinacaciasalignashrubs AT perretsandra geneticparametersofgrowthandsurvivalinacaciasalignashrubs AT scapimcarlosalberto geneticparametersofgrowthandsurvivalinacaciasalignashrubs AT arnholdemmanuel geneticparametersofgrowthandsurvivalinacaciasalignashrubs
_version_	1714202123605901312

Genetic parameters of growth and survival in Acacia saligna shrubs

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