Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/37343
Title: Vegetative rescue and cuttings propagation of Araucaria angustifolia (Bertol.) Kuntze
Other Titles: Resgate vegetativo e estaquia de Araucaria angustifolia(Bertol.) Kuntze
Keywords: Brazilian pine
Cutting propagation
Clonal forestry
Araucária
Estaquia
Silvicultura clonal
Issue Date: 2015
Publisher: Sociedade de Investigações Florestais
Citation: WENDLING, I.; BRONDANI, G. E. Vegetative rescue and cuttings propagation of Araucaria angustifolia (Bertol.) Kuntze. Revista Árvore, Viçosa, MG, v. 39, n. 1, p. 93-104, 2015.
Abstract: Brazilian pine or araucaria (Araucaria angustifolia) is a coniferous tree with great economic, social and environmental importance in southern Brazil, being exploited for both wood production and for its edible pine nuts. However, no efficient cloning techniques are available and, therefore, the purpose of this study was to evaluate the effectiveness of vegetative rescue methods for cuttings propagation of the species. Shoots/cuttings were generated in two ways: 26 years old trees underwent coppicing and 20 years old trees had the primary branches on the upper third of crown pruned at 2, 20 and 50 cm from the main trunk. Orthotropic shoots were rooted after application of indole-3-butyric acid (IBA) at 0, 2, 4 and 6 g.L-1. Coppicing produced 47 cuttings per plant with 90% orthotropic shoots, while pruning resulted in 182 cuttings per plant with 44% orthotropic shoots. Rooting success indexes were low with no influence of IBA, although they are slightly superior to the ones available in the literature for the species, ranging from 12 to 30% for the coppice shoots and from 0 to 28% for the branches shoots. We conclude that both vegetative rescue techniques are viable and have potentially important applications. Coppicing is recommended for the propagation aiming the production of wood, while shoots derived from the side branches of the crown are more appropriate for seeds orchards formation.
URI: http://repositorio.ufla.br/jspui/handle/1/37343
Appears in Collections:DCF - Artigos publicados em periódicos



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