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Abstract:

Prosopis represents a valuable forest resource in arid and semiarid regions. Management of promising species requires information about genetic parameters, mainly the heritability (h2) of quantitative profitable traits. This parameter is traditionally estimated from progeny tests or half-sib analysis conducted in experimental stands. Such an approach estimates h 2 from the ratio of between-family/total phenotypic variance. These analyses are difficult to apply to natural populations of species with a long life cycle, overlapping generations, and a mixed mating system, without genealogical information. A promising alternative is the use of molecular marker information to infer relatedness between individuals and to estimate h 2 from the regression of phenotypic similarity on inferred relatedness. In the current study we compared h2 of 13 quantitative traits estimated by these two methods in an experimental stand of P. alba, where genealogical information was available. We inferred pairwise relatedness by Ritland's method using six microsatellite loci. Relatedness and heritability estimates from molecular information were highly correlated to the values obtained from genealogical data. Although Ritland's method yields lower h 2 estimates and tends to overestimate genetic correlations between traits, this approach is useful to predict the expected relative gain of different quantitative traits under selection without genealogical information.

Registro:

Documento: Artículo
Título:Consistency between marker- and genealogy-based heritability estimates in an experimental stand of Prosopis alba (Leguminosae)
Autor:Bessega, C.; Saidman, B.O.; Darquier, M.R.; Ewens, M.; Sánchez, L.; Rozenberg, P.; Vilardi, J.C.
Filiación:Departamento de Ecología, Genética Y Evolución, Facultad de Ciencias Exactas Y Naturales, Pabellón 2, 1428, Buenos Aires, Argentina
Consejo Nacional de Investigaciones Científicas Y Técnicas (CONICET), Av. Rivadavia 1917, Buenos Aires, Argentina
Estación Experimental Fernández, Departamento de Robles, Santiago del Estero, Argentina
Unité Amélioration Génétique et Physiologie Forestières, BP 20619, Ardon, 45166 Olivet Cedex, France
Palabras clave:Fabaceae; Heritability; Leguminosae; Molecular markers; Prosopis alba; Quantitative traits; arid region; estimation method; experimental study; forest resource; genealogy; genetic marker; heritability; legume; life cycle; profitability; relatedness; resource management; semiarid region; Fabaceae; Prosopis; Prosopis alba
Año:2009
Volumen:96
Número:2
Página de inicio:458
Página de fin:465
DOI: http://dx.doi.org/10.3732/ajb.0800074
Título revista:American Journal of Botany
Título revista abreviado:Am. J. Bot.
ISSN:00029122
CODEN:AJBOA
PDF:https://bibliotecadigital.exactas.uba.ar/download/paper/paper_00029122_v96_n2_p458_Bessega.pdf
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00029122_v96_n2_p458_Bessega

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Citas:

---------- APA ----------
Bessega, C., Saidman, B.O., Darquier, M.R., Ewens, M., Sánchez, L., Rozenberg, P. & Vilardi, J.C. (2009) . Consistency between marker- and genealogy-based heritability estimates in an experimental stand of Prosopis alba (Leguminosae). American Journal of Botany, 96(2), 458-465.
http://dx.doi.org/10.3732/ajb.0800074
---------- CHICAGO ----------
Bessega, C., Saidman, B.O., Darquier, M.R., Ewens, M., Sánchez, L., Rozenberg, P., et al. "Consistency between marker- and genealogy-based heritability estimates in an experimental stand of Prosopis alba (Leguminosae)" . American Journal of Botany 96, no. 2 (2009) : 458-465.
http://dx.doi.org/10.3732/ajb.0800074
---------- MLA ----------
Bessega, C., Saidman, B.O., Darquier, M.R., Ewens, M., Sánchez, L., Rozenberg, P., et al. "Consistency between marker- and genealogy-based heritability estimates in an experimental stand of Prosopis alba (Leguminosae)" . American Journal of Botany, vol. 96, no. 2, 2009, pp. 458-465.
http://dx.doi.org/10.3732/ajb.0800074
---------- VANCOUVER ----------
Bessega, C., Saidman, B.O., Darquier, M.R., Ewens, M., Sánchez, L., Rozenberg, P., et al. Consistency between marker- and genealogy-based heritability estimates in an experimental stand of Prosopis alba (Leguminosae). Am. J. Bot. 2009;96(2):458-465.
http://dx.doi.org/10.3732/ajb.0800074