Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.3/1226
Título: Vegetative propagation of the endangered Azorean tree, Picconia azorica
Autor: Martins, José
Moreira, Orlando
Silva, Luís
Moura, Mónica
Palavras-chave: Air Layering
Endemic Plants
Picconia azotica
Rooting
Stem Cuttings
Vegetative Propagation
Azores Islands
Data: 2011
Editora: Universidade dos Açores
Citação: "ARQUIPÉLAGO. Life and Marine Sciences". ISSN 0873-4704. Nº 28 (2011): 39-46
Relatório da Série N.º: Ciências Biológicas e Marinhas = Life and Marine Sciences;28
Resumo: Picconia azorica (Tutin) Knobl. (Oleaceae), commonly named “pau-branco”, is an endangered tree endemic to the Azores. Vegetative propagation may be important for the preservation of this species, particularly in depauperate populations, with low seed set. The objective of this study was to evaluate effective techniques for the vegetative propagation of P. azorica by rooting of stem cuttings or by air layering. Rooting substrate, IBA concentration, and the portion of the area of the terminal leaf pair kept on stem cuttings, when tested in early spring (semi-hardwood cuttings) and autumn (hardwood cuttings) failed to produce any rooted cuttings. In contrast, air layering performed in the autumn on lateral branches of adult trees was successful. After 12 months, air layers treated with 5000 ppm of IBA in talc achieved 65% rooting, while those treated with 2500 ppm IBA or without growth regulator only attained 41 and 28% rooting, respectively. Our study indicates that P. azorica is relatively easy to propagate by air layering. This method could be used to restore natural populations of P. azorica when seeds are not available or plant competition impairs natural regeneration.
URI: http://hdl.handle.net/10400.3/1226
ISSN: 0873-4704
Aparece nas colecções:ARQ - LMS - Número 28

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