Dissertação

Propagação vegetativa de Mogno Africano

The increasing demand for wood and the exploitation of native forests endangers the extinction of high value plant specimens. Therefore, exotic species are being used, on the south hemisphere, in tropical and sub-tropical countries and especially in the Amazon Region with the African mahoganies. Alo...

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Autor principal: Fagundes, Paulo Renato de Oliveira
Grau: Dissertação
Idioma: por
Publicado em: Universidade Federal de Roraima 2022
Assuntos:
Khaya ivorensis
Khaya senegalensis
Enxertia
Estaquia
Grafting
Ccuttings
CNPQ::CIENCIAS AGRARIAS::AGRONOMIA
Acesso em linha: http://repositorio.ufrr.br:8080/jspui/handle/prefix/603
id oai:repositorio.ufrr.br:prefix-603
recordtype dspace
spelling oai:repositorio.ufrr.br:prefix-6032023-07-27T15:43:39Z Propagação vegetativa de Mogno Africano Vegetative propagation of African mahogany Fagundes, Paulo Renato de Oliveira Chagas, Edvan Alves http://lattes.cnpq.br/5396967100376451 Smiderle, Oscar José http://lattes.cnpq.br/6069274946617843 Khaya ivorensis Khaya senegalensis Enxertia Estaquia Grafting Ccuttings CNPQ::CIENCIAS AGRARIAS::AGRONOMIA The increasing demand for wood and the exploitation of native forests endangers the extinction of high value plant specimens. Therefore, exotic species are being used, on the south hemisphere, in tropical and sub-tropical countries and especially in the Amazon Region with the African mahoganies. Along with this, there has been an increasing demand on methods of vegetative propagation of these species that guarantee the superior attributes of the stock plant. Thereby, the aim of this study was to test the efficiency of different indole-butyric acid (IBA) concentrations, cut of kind and substrate on cuttings of Khaya ivorensis and Khaya senegalensis in non-mist propagators and greenhouses and test different methods of grafting for vegetative propagation of African mahogany. In the cuttings experiments different auxin concentrations were tested as well as different immersion times, proveniences of the cuttings and types of cuttings. For the grafting, four methods were tested using African mahogany below the same species. The methods used were Saddle graft (SG), Side-veener graft (SV), Whip and tongue grafts (WT) and Patch budding (PB). It was possible to observe that there was a tendency to reach better results in rooting percentage and survival percentage using the concentration of 800 mg.L-1 of IBA in cuttings especially the apical leaf cuttings. The rooted cuttings grew with vigor and achieved 53 cm length. The grafting method with bests results was SV with 16,67% success and grafts developed vigorously reaching 27 cm in 30 days. O aumento da demanda por madeira e a exploração das florestas nativas coloca em risco a extinção de várias espécies vegetais de grande valor. Neste sentido tem crescido a utilização de espécies exóticas, especialmente no hemisfério sul, em países de clima tropical e subtropical e em especial na região Amazônica com o uso do mogno africano. Com isso, existe elevada demanda por métodos de propagação dessas espécies que garantam as características superiores da planta matriz. Assim, o objetivo deste estudo foi avaliar a eficiência de diferentes concentrações de ácido indolbultírico (AIB), tipo de estaca e substrato no enraizamento de estacas de Khaya ivorensis A. Chev e Khaya senegalensis A. Juss, em câmara de subirrigação e casa de vegetação e testar diferentes métodos de enxertia para propagação vegetativa de mogno africano. Na propagação vegetativa via estaquia foram testados o uso de diversas concentrações de AIB, diferentes tempos de imersão, procedência e tipos de estacas. Via enxertia foram testados quatro tipos de enxertia de mogno africano sob mogno africano. Foram realizadas as enxertias do tipo Fenda Cheia (FC), Fenda Lateral (FL), Inglês Complicado (IC) e Borbulhia de placa (BP). Foi possível observar nos experimentos de estaquia uma tendência a melhores percentuais de enraizamento e maior percentual de sobrevivência das estacas utilizando concentração de 800 mg.L-1 de AIB, principalmente em estacas foliares apicais. As estacas enraizadas apresentaram sistema radicular vigoroso com comprimentos de até 53 cm. A técnica de enxertia que apresentou os melhores resultados foi a do tipo FC com 16,67% de pegamento e os enxertos desenvolvendo-se de forma vigorosa alcançando até 27 cm em 30 dias. 2022-03-23T15:12:37Z 2013 2022-03-23T15:12:37Z 2013 Dissertação FAGUNDES, Paulo Renato de Oliveira. Propagação vegetativa de Mogno Africano. 2013. 48f. Dissertação (Mestrado em Agronomia) - Programa de Pós-Graduação em Agronomia, Universidade Federal de Roraima, Boa Vista, 2013. http://repositorio.ufrr.br:8080/jspui/handle/prefix/603 por Acesso Aberto Attribution-NonCommercial-ShareAlike 3.0 Brazil http://creativecommons.org/licenses/by-nc-sa/3.0/br/ Universidade Federal de Roraima Brasil PRPPG - Pró-reitoria de Pesquisa e Pós-Graduação POSAGRO - Programa de Pós-Graduação em Agronomia UFRR
institution Repositório Institucional - Universidade Federa de Roraima - UFRR
collection DSpace
language por
topic Khaya ivorensis
Khaya senegalensis
Enxertia
Estaquia
Grafting
Ccuttings
CNPQ::CIENCIAS AGRARIAS::AGRONOMIA
spellingShingle Khaya ivorensis
Khaya senegalensis
Enxertia
Estaquia
Grafting
Ccuttings
CNPQ::CIENCIAS AGRARIAS::AGRONOMIA
Fagundes, Paulo Renato de Oliveira
Propagação vegetativa de Mogno Africano
topic_facet Khaya ivorensis
Khaya senegalensis
Enxertia
Estaquia
Grafting
Ccuttings
CNPQ::CIENCIAS AGRARIAS::AGRONOMIA
description The increasing demand for wood and the exploitation of native forests endangers the extinction of high value plant specimens. Therefore, exotic species are being used, on the south hemisphere, in tropical and sub-tropical countries and especially in the Amazon Region with the African mahoganies. Along with this, there has been an increasing demand on methods of vegetative propagation of these species that guarantee the superior attributes of the stock plant. Thereby, the aim of this study was to test the efficiency of different indole-butyric acid (IBA) concentrations, cut of kind and substrate on cuttings of Khaya ivorensis and Khaya senegalensis in non-mist propagators and greenhouses and test different methods of grafting for vegetative propagation of African mahogany. In the cuttings experiments different auxin concentrations were tested as well as different immersion times, proveniences of the cuttings and types of cuttings. For the grafting, four methods were tested using African mahogany below the same species. The methods used were Saddle graft (SG), Side-veener graft (SV), Whip and tongue grafts (WT) and Patch budding (PB). It was possible to observe that there was a tendency to reach better results in rooting percentage and survival percentage using the concentration of 800 mg.L-1 of IBA in cuttings especially the apical leaf cuttings. The rooted cuttings grew with vigor and achieved 53 cm length. The grafting method with bests results was SV with 16,67% success and grafts developed vigorously reaching 27 cm in 30 days.
author_additional Chagas, Edvan Alves
author_additionalStr Chagas, Edvan Alves
format Dissertação
author Fagundes, Paulo Renato de Oliveira
title Propagação vegetativa de Mogno Africano
title_short Propagação vegetativa de Mogno Africano
title_full Propagação vegetativa de Mogno Africano
title_fullStr Propagação vegetativa de Mogno Africano
title_full_unstemmed Propagação vegetativa de Mogno Africano
title_sort propagação vegetativa de mogno africano
publisher Universidade Federal de Roraima
publishDate 2022
url http://repositorio.ufrr.br:8080/jspui/handle/prefix/603
_version_ 1787156636540862464
score 11.755432

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