caa a22 4500 445323949 CHVBK 20180317142713.0 cr unu---uuuuu 170323e20110301xx s 000 0 eng 10.1007/s10681-010-0292-y doi (NATIONALLICENCE)springer-10.1007/s10681-010-0292-y Bayesian threshold analysis of breeding values, genetic correlation and heritability of flowering intensity in Eucalyptus cladocalyx under arid conditions [Elektronische Daten] [Camila Cané-Retamales, Freddy Mora, Felipe Vargas-Reeve, Sandra Perret, Rodrigo Contreras-Soto] In the dry regions of Chile, prolific flowering from forest plantation is particularly advantageous for honey production, in order to supplement the erratic flowering in native plants. Eucalyptus cladocalyx is a species suitable for areas with low water availability and their flowers provide a reliable source for the production of honey. The aim of this study was to examine the heritability of flowering intensity in 49 open-pollinated families of E. cladocalyx in southern Atacama Desert, Chile, with the view to the selection for prolific flowering, but with minimal impact on precocious flowering. The Bayesian variance component estimation model was assumed using the Gibbs sampling algorithm. Threshold models were fitted to flowering data (bi-character model). Flowering intensity was found to be highly heritable (posterior mean: h 2=0.48; and credible interval: 0.41-0.56). The posterior mean of the genetic correlation between flowering precocity and intensity was positive (r=0.45) and according to the credible interval (0.341-0.542), it was significantly different from zero, indicating that selection on breeding values of early flowering at age three, would have significant and positive impact on flowering intensity 5years later (or in 8-year-old trees). These results are important for the start of a small-scale breeding program for the species in southern Atacama Desert. The genetic variability found in these breeding populations may be used for breeding purposes in regions where arid environmental conditions are limiting to the establishment of eucalypts trees. Springer Science+Business Media B.V., 2010 Gibbs sampling nationallicence Heritability nationallicence Genetic correlation nationallicence Prolific flowering nationallicence AGG% : Additive genetic gain nationallicence DIC : Deviance information criterion nationallicence EF : Early flowering nationallicence FI : Flowering intensity nationallicence GS : Gibbs sampling nationallicence h2 : Narrow-sense heritability nationallicence MM : Mean in multinomial scale nationallicence Γ : Genetic correlation nationallicence Cané-Retamales Camila Facultad de Ciencias Forestales, Universidad de Concepción, Victoria 631, Barrio Universitario, Concepción, Chile aut Mora Freddy Facultad de Ciencias Forestales, Universidad de Concepción, Victoria 631, Barrio Universitario, Concepción, Chile aut Vargas-Reeve Felipe Facultad de Ciencias Forestales, Universidad de Concepción, Victoria 631, Barrio Universitario, Concepción, Chile aut Perret Sandra Instituto de Investigación Forestal, Ministro de Agricultura de Chile, Huérfanos 554, Santiago, Chile aut Contreras-Soto Rodrigo Facultad de Ciencias Forestales, Universidad de Concepción, Victoria 631, Barrio Universitario, Concepción, Chile aut Euphytica Springer Netherlands 178/2(2011-03-01), 177-183 0014-2336 178:2<177 2011 178 10681 https://doi.org/10.1007/s10681-010-0292-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10681-010-0292-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Cané-Retamales Camila Facultad de Ciencias Forestales, Universidad de Concepción, Victoria 631, Barrio Universitario, Concepción, Chile aut NATIONALLICENCE 700 1- Mora Freddy Facultad de Ciencias Forestales, Universidad de Concepción, Victoria 631, Barrio Universitario, Concepción, Chile aut NATIONALLICENCE 700 1- Vargas-Reeve Felipe Facultad de Ciencias Forestales, Universidad de Concepción, Victoria 631, Barrio Universitario, Concepción, Chile aut NATIONALLICENCE 700 1- Perret Sandra Instituto de Investigación Forestal, Ministro de Agricultura de Chile, Huérfanos 554, Santiago, Chile aut NATIONALLICENCE 700 1- Contreras-Soto Rodrigo Facultad de Ciencias Forestales, Universidad de Concepción, Victoria 631, Barrio Universitario, Concepción, Chile aut NATIONALLICENCE 773 0- Euphytica Springer Netherlands 178/2(2011-03-01), 177-183 0014-2336 178:2<177 2011 178 10681 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer