Engenharia Florestal (Sede)
URI permanente desta comunidadehttps://arandu.ufrpe.br/handle/123456789/15
Siglas das Coleções:
APP - Artigo Publicado em Periódico
TAE - Trabalho Apresentado em Evento
TCC - Trabalho de Conclusão de Curso
Navegar
4 resultados
Resultados da Pesquisa
Item Produção de miniestacas em minijardim clonal de Psidium cattleyanum Sabine(2025-02-26) Silva, Eliene Francelino da; Gallo, Ricardo; Santos, Paulo César da Silva; http://lattes.cnpq.br/1101394195008183; http://lattes.cnpq.br/5160912065817980; http://lattes.cnpq.br/7091545006719309A propagação vegetativa de espécies nativas enfrenta desafios relacionados à variabilidade genética e ao baixo enraizamento de estacas, dificultando a produção de mudas em larga escala. O Psidium cattleyanum Sabine, conhecido como araçá, é uma espécie da Mata Atlântica com potencial econômico e ecológico, mas seu cultivo comercial ainda é limitado pela ausência de protocolos eficientes de propagação clonal. Neste estudo, avaliou-se a produção de miniestacas em minijardim clonal ao longo de 12 meses, analisando o desenvolvimento das minicepas e sua capacidade de regeneração. O experimento foi conduzido na Casa de Vegetação da UFRPE, utilizando 11 acessos da espécie, com 12 indivíduos por acesso, totalizando 132 plantas. As avaliações foram realizadas a cada 45 dias. As variáveis analisadas no estudo foram a altura das minicepas, o número de folhas, o tamanho dos brotos e o número de estacas formadas. A análise estatística foi realizada no software RBio, aplicando ANOVA para verificar diferenças significativas, o teste de Shapiro-Wilk para normalidade e o teste de Scott-Knott para agrupamento dos acessos. Os resultados indicaram que o acesso 23 apresentou maior altura, número de folhas e produção de miniestacas, evidenciando superioridade em relação aos demais. A partir da sexta coleta, observou-se um declínio na produção, possivelmente devido ao esgotamento fisiológico das minicepas, sugerindo a necessidade de ajustes no manejo, como intervalos maiores entre podas ou suplementação nutricional específica. O estudo demonstrou que o minijardim clonal é uma técnica eficiente para a propagação vegetativa de Psidium cattleyanum, sendo uma alternativa sustentável para a produção de mudas de alta qualidade. Os achados podem contribuir para o aprimoramento das práticas de manejo e a seleção de genótipos mais produtivos, além de reforçar o potencial da espécie para conservação e cultivo comercial.Item Reguladores de crescimento vegetal no enraizamento de miniestacas de araçá (Psidium cattleyanum Sabine)(2024-03-05) Amorim, Emanuel Regis Rodrigues de; Gallo, Ricardo; Sousa, Moema Barbosa de; http://lattes.cnpq.br/1125900782225064; http://lattes.cnpq.br/5160912065817980; http://lattes.cnpq.br/2530254056222729Item Ácido indolbutírico na miniestaquia de Libidibia ferrea (Mart. Ex Tul) L. P. Queiroz(2019-12-05) Bitú, Igor de Souza; Gallo, Ricardo; http://lattes.cnpq.br/5160912065817980; http://lattes.cnpq.br/7509246923358247The pau-ferro, Libidibia ferrorea (Mart. Ex Tul.) L.P. Queiroz, a tree native to Brazil, is found in the Caatinga, the Cerrado and the Atlantic Forest. In the Northeast region it has several uses, from energy (firewood and charcoal), to construction, fences, forage and medicine. Its seeds present dormancy that must be broken by scarification if a germination above 50% is desired, justifying the use of the seedling production process by mini-cutting. Thus, the objective of this work evaluate the viability of vegetative propagation for species and to define a concentration of indolbutyric acid for future evaluations. The evaluations were carried out in the nursery of the forest science department of the Universidade Federal Rural de Pernambuco (UFRPE) in Recife, where a seminal clonal garden was set up to obtain the cuttings that would be tested for the influence of the use of indolbutyric acid (IBA) in the rooting of the species. The experiment was conducted for a period of 100 days in order to observe its development in 3 phases, house of vegetation (40 days), where the mortality of cuttings, presence of sprouting, vigor of sprouts and the presence of root at the bottom of the tubetes, house of shade (35 days), where the mortality of cuttings was evaluated, sprouting, vigor of the shoot, presence of root at the bottom of the tube, number of leaves and size of the shoot, and full sun (25 days), where the abscission of leaves, emission of leaves, presence and size of the shoots, formation of callus, number of roots, size of the largest root, volume of root and dry mass of the aerial part, the root and the most callus root were evaluated. After the end of the experiment and the evaluation of its trends and the derivation of its equations, it was concluded that Libidibia ferrea (Mart. Ex Tul.) L. P. Queiroz has enormous potential for vegetative propagation, where the average survival at the end of 100 days was almost 70% and that the dosage of 4000 mg L-1 of IBA is the most indicated to help in the rooting of its cuttings.Item Alporquia de Trema micrantha (L.) Blume sob indutores de enraizamento(2022-10-04) Carvalho, Alfran Soares Couto de; Gallo, Ricardo; http://lattes.cnpq.br/5160912065817980In forestry projects, the acquisition of seedlings can be a major obstacle, vegetative propagation techniques can help in this context. Among the propagation techniques, air layering is indicated for species that are difficult to propagate vegetatively, such Trema micranta (L.) Blume. Synthetic auxins provide greater effectiveness in vegetative propagation techniques, but their high costs encourage the search for more economical alternatives. The aqueous extract of Cyperus rotundus has shown rooting-inducing effects similar to commercial rooting inducers. Because it is an invasive plant with wide occurrence, its use as a rooting inducer is shown to be an accessible and economical alternative. This present work sought to verify the viability of vegetative propagation through the air layering technique in Trema micrantha trees under effect of rooting inducers, including the aqueous extract of C. rotundus. For that, seven trees were selected in the Dois Irmãos (Recife-PE) and submitted to three treatments over 31 days: 1) Control, in the absence of inducers; 2) Commercial rooting inducer indole-3-butyric acid (IBA); 3) Aqueous extract of C. rotundus. Among treatments, there was a significant difference only in the development of root dry matter, where the aqueous extract was more efficient than the others, which did not significantly distinguish between them. The interaction between the two factors (Tree x Rooting Inducers) showed a significant difference in the production of root dry matter, with greater efficiency of the aqueous extract compared to other treatments in tree 4 and better performance of tree 4 than the other trees, when all under the effect of the aqueous extract. The Tree factor presented significant differences regarding the shoots close to the air layer and regarding the callus and root development, showing itself as the determining factor in radical development in the employed context. The callus and root dry matter values showed a high negative correlation, suggesting that callus precede and give place to roots in layered layers of T. micrantha. There was no influence of epicormics shoots close to the air layer on the effectiveness of the technique. There were indications that the technique required more time for its success and better performance.