Vegetative propagation of patagonian cypress, a vulnerable species from the subantarctic forest of South America

Increasing risks of loosing forest genetic resources and the need for a sustainable quality wood supply make focusing research efforts on undomesticated tree species necessary. The study of their genetic variation in vegetative propagation ability and the development of practical methodologies to ob...

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Autores principales:	Aparicio,Alejandro, Pastorino,Mario, Martinez-Meier,Alejandro, Gallo,Leonardo
Lenguaje:	English
Publicado:	Universidad Austral de Chile, Facultad de Ciencias Forestales 2009
Materias:	Austrocedrus Cupressaceae stem rooting scion grafting
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-92002009000100004
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spelling	oai:scielo:S0717-920020090001000042009-06-12Vegetative propagation of patagonian cypress, a vulnerable species from the subantarctic forest of South AmericaAparicio,AlejandroPastorino,MarioMartinez-Meier,AlejandroGallo,Leonardo Austrocedrus Cupressaceae stem rooting scion grafting Increasing risks of loosing forest genetic resources and the need for a sustainable quality wood supply make focusing research efforts on undomesticated tree species necessary. The study of their genetic variation in vegetative propagation ability and the development of practical methodologies to obtain genetic copies are essential tools for conservation and breeding programs. patagonian cypress Austrocedrus chilensis is a vulnerable conifer native to the subantarctic forest of South America, with high ecological importance and economical potential. Its genetic diversity, mostly sheltered within unprotected populations, is seriously threatened. This work examined the ability of different genotypes of A. chilensis from xeric, mesic and humid populations to propagate asexually by stem rooting and scion grafting. The influence of exogenous auxins, season of cutting collection, ontogenetic stage of the donor plants, grafting season, and type of scions, was analyzed. Stem rooting ability was found to be poor both for adult (average = 0.27%) and juvenile ortets (average = 2.10%). Only one treatment, a juvenile progeny from a xeric provenance, showed remarkable results with 33.33% of rooting capacity. Grafting showed good results in early spring experiment using vigorous semi-hardwood scions, with an average of 80.95% of successful grafts. Compatibility between genotypes from different provenances used as scion and rootstock was found to be wide. These results indicate that although A. chilensis is a difficult-to-root species, its vegetative propagation by means of scion grafting is feasible using low cost technology.info:eu-repo/semantics/openAccessUniversidad Austral de Chile, Facultad de Ciencias ForestalesBosque (Valdivia) v.30 n.1 20092009-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-92002009000100004en10.4067/S0717-92002009000100004
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Austrocedrus Cupressaceae stem rooting scion grafting
spellingShingle	Austrocedrus Cupressaceae stem rooting scion grafting Aparicio,Alejandro Pastorino,Mario Martinez-Meier,Alejandro Gallo,Leonardo Vegetative propagation of patagonian cypress, a vulnerable species from the subantarctic forest of South America
description	Increasing risks of loosing forest genetic resources and the need for a sustainable quality wood supply make focusing research efforts on undomesticated tree species necessary. The study of their genetic variation in vegetative propagation ability and the development of practical methodologies to obtain genetic copies are essential tools for conservation and breeding programs. patagonian cypress Austrocedrus chilensis is a vulnerable conifer native to the subantarctic forest of South America, with high ecological importance and economical potential. Its genetic diversity, mostly sheltered within unprotected populations, is seriously threatened. This work examined the ability of different genotypes of A. chilensis from xeric, mesic and humid populations to propagate asexually by stem rooting and scion grafting. The influence of exogenous auxins, season of cutting collection, ontogenetic stage of the donor plants, grafting season, and type of scions, was analyzed. Stem rooting ability was found to be poor both for adult (average = 0.27%) and juvenile ortets (average = 2.10%). Only one treatment, a juvenile progeny from a xeric provenance, showed remarkable results with 33.33% of rooting capacity. Grafting showed good results in early spring experiment using vigorous semi-hardwood scions, with an average of 80.95% of successful grafts. Compatibility between genotypes from different provenances used as scion and rootstock was found to be wide. These results indicate that although A. chilensis is a difficult-to-root species, its vegetative propagation by means of scion grafting is feasible using low cost technology.
author	Aparicio,Alejandro Pastorino,Mario Martinez-Meier,Alejandro Gallo,Leonardo
author_facet	Aparicio,Alejandro Pastorino,Mario Martinez-Meier,Alejandro Gallo,Leonardo
author_sort	Aparicio,Alejandro
title	Vegetative propagation of patagonian cypress, a vulnerable species from the subantarctic forest of South America
title_short	Vegetative propagation of patagonian cypress, a vulnerable species from the subantarctic forest of South America
title_full	Vegetative propagation of patagonian cypress, a vulnerable species from the subantarctic forest of South America
title_fullStr	Vegetative propagation of patagonian cypress, a vulnerable species from the subantarctic forest of South America
title_full_unstemmed	Vegetative propagation of patagonian cypress, a vulnerable species from the subantarctic forest of South America
title_sort	vegetative propagation of patagonian cypress, a vulnerable species from the subantarctic forest of south america
publisher	Universidad Austral de Chile, Facultad de Ciencias Forestales
publishDate	2009
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-92002009000100004
work_keys_str_mv	AT aparicioalejandro vegetativepropagationofpatagoniancypressavulnerablespeciesfromthesubantarcticforestofsouthamerica AT pastorinomario vegetativepropagationofpatagoniancypressavulnerablespeciesfromthesubantarcticforestofsouthamerica AT martinezmeieralejandro vegetativepropagationofpatagoniancypressavulnerablespeciesfromthesubantarcticforestofsouthamerica AT galloleonardo vegetativepropagationofpatagoniancypressavulnerablespeciesfromthesubantarcticforestofsouthamerica
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Vegetative propagation of patagonian cypress, a vulnerable species from the subantarctic forest of South America

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