Field performance of various Pinus radiata breeding families established on a drought-prone site in central Chile

Espinoza-Meza, Sergio; Magni, Carlos R.; Rubilar, Rafael A.; Yañez, Marco A.; Cabrera-Ariza, Antonio; Santelices-Moya, Rómulo; Ivković, Miloš

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dc.contributor.author	Espinoza-Meza, Sergio
dc.contributor.author	Magni, Carlos R.
dc.contributor.author	Rubilar, Rafael A.
dc.contributor.author	Yañez, Marco A.
dc.contributor.author	Cabrera-Ariza, Antonio
dc.contributor.author	Santelices-Moya, Rómulo
dc.contributor.author	Ivković, Miloš
dc.date.accessioned	2017-09-07T18:42:52Z
dc.date.available	2017-09-07T18:42:52Z
dc.date.issued	2017
dc.identifier.uri	http://repositorio.ucm.cl/handle/ucm/119
dc.description.abstract	Background: Pinus radiata D.Don is in its third generation of selective breeding on contrasting site types in central Chile, creating interest in its responses to selection and any differential adaptation to site types. We studied the phenotypic variability of growth traits, survival and six ecophysiological traits in 30 open- and controlpollinated families, representing two breeding regions and three breeding generations, in a 2-year-old P. radiata field trial on a sandy soil in the Mediterranean drylands of Central Chile. Findings: Growth, survival and the ecophysiological traits did not differ between the regional origin of the breeding populations. However, breeding-generation effects were significant for height and diameter. As expected, growth traits showed progressive improvement with successive generations. Individual-family effects were evident for all traits except one ecophysiological trait. Conclusions: Breeding has evidently improved early growth performance in the field, despite no clear effect of regional breeding population, but no such effects were observed for the ecophysiological traits. Despite the current study demonstrating considerable family variation at age 2 years, it is unclear how these results relate to performance of mature trees in the field.	es_CL
dc.language.iso	en	es_CL
dc.rights	Atribución-NoComercial-SinDerivadas 3.0 Chile	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/cl/	*
dc.source	New Zealand Journal of Forestry Science, 47	es_CL
dc.subject	Breeding	es_CL
dc.subject	Gas exchange	es_CL
dc.subject	Radiata pine	es_CL
dc.subject	Sandy soils	es_CL
dc.subject	Survival	es_CL
dc.subject	Growth rate	es_CL
dc.subject	Ecophysiology	es_CL
dc.title	Field performance of various Pinus radiata breeding families established on a drought-prone site in central Chile	es_CL
dc.type	Article	es_CL
dc.ucm.facultad	Facultad de Ciencias Agrarias y Forestales	es_CL
dc.ucm.indexacion	Scopus	es_CL
dc.ucm.doi	doi.org/10.1186/s40490-017-0093-3	es_CL