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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Propaga??o vegetativa de esp?cies florestais com potencial para uso como cerca viva / Vegetative propagation of forest species with potential for hedge use

Chaves, Tiago de Andrade 25 August 2016 (has links)
Submitted by Celso Magalhaes (celsomagalhaes@ufrrj.br) on 2017-07-19T11:17:32Z No. of bitstreams: 1 2016 - Tiago de Andrade Chaves.pdf: 554789 bytes, checksum: 8b331ddf709ed404e7783dcae1b07269 (MD5) / Made available in DSpace on 2017-07-19T11:17:32Z (GMT). No. of bitstreams: 1 2016 - Tiago de Andrade Chaves.pdf: 554789 bytes, checksum: 8b331ddf709ed404e7783dcae1b07269 (MD5) Previous issue date: 2016-08-25 / In rural areas the native forest fragments and the presence of the tree element can provide many ecosystem services to the population and the productive system. However, due to the small size of the properties of small producers in the state of Rio de Janeiro, linked to the fear of losing production areas with the introduction of trees not always this element is part of the system. One of the strategies found for the introduction of tree species in production systems is the use of it as a hedge. The objective of this study was to test the cutting propagation of multifunctional forest species with potential for use as a living fence. It was assessed that the best position in the branch, apex or base and the use of nut grass extract in the rooting of cuttings of Schinus terebinthifolius, Gliricidia sepium, Croton urucurana, Trema micranta, Pouteria caimito and Casearia sylvestris. The vegetative propagules were immersed in distilled water or immersed in solution extract of C. rotundus tubers. We evaluated the number and size of buds, budding rate, shoot dry weight, rooting rate, root number, size of the largest root, root dry weight and survival rate. The species G. sepium, S. terebinthifolius and T. micranta presented rooting rate of 17.5%, 7.5% and 2.5%, respectively. The other did not send roots. As for the position in the branch, only 5% of apical cuttings of S. terebinthifolius issued roots. The highest rates were found budding in S. terebinthifolius (47.5%), G. sepium (27.5%), C. sylvestris (22.5%) and T. micranta (2.5%). The use of C. rotundus extract showed significant difference in the number of shoots of basal cuttings of G. sepium, but had no effect on rooting. Only G. sepium showed potential for reproduction by cuttings. The use of cuttings obtained from the base of the branches were more efficient in propagation of forest species. The use of fitoregulador not influenced rooting, however, showed potential in boosting the number of shoots in basal cuttings of G. sepium / Na ?rea rural os fragmentos de mata nativa e a presen?a do elemento arb?reo podem fornecer diversos servi?os ecossist?micos ? popula??o e ao sistema produtivo. Por?m, em consequ?ncia ao reduzido tamanho das propriedades dos pequenos produtores do estado do Rio de Janeiro, associado ao receio de perder ?reas de produ??o com a introdu??o das ?rvores, nem sempre este elemento faz parte do sistema produtivo. Uma das estrat?gias encontradas para agregar esp?cies arb?reas aos sistemas produtivos ? o uso das mesmas como cerca viva. O objetivo deste trabalho foi testar a propaga??o por estaquia de esp?cies florestais multifuncionais com potencial para uso como cerca viva. Foi avaliada qual a melhor posi??o do ramo, ?pice ou base e o uso do extrato de Cyperus rotundus sobre o enraizamento das estacas de Schinus terebinthifolius, Gliric?dia sepium, Croton urucurana, Trema micranta, Pouteria caimito e Casearia sylvestris. Os prop?gulos vegetativos foram imersos em ?gua destilada ou imersos em solu??o com 50% de ?gua destilada e 50 % de extrato de tub?rculos de C. rotundus. Foram avaliados o n?mero e tamanho dos brotos, taxa de brota??o, mat?ria seca de parte a?rea, taxa de enraizamento, n?mero de ra?zes prim?rias, tamanho da maior raiz, mat?ria seca de raiz e taxa de sobreviv?ncia. As esp?cies G. sepium, S. terebinthifolius e T. micranta apresentaram taxa de enraizamento de 17,5%, 7,5% e 2,5%, respectivamente. As demais n?o emitiram ra?zes. Quanto ? posi??o no ramo, somente 5% das estacas apicais de S. terebinthifolius emitiram ra?zes. As maiores taxas de brota??o foram encontradas em S. terebinthifolius (47,5%), G. sepium (27,5%), C. sylvestris (22,5%) e T. micranta (2,5 %). O uso do extrato de C. rotundus mostrou diferen?a significativa no n?mero de brotos das estacas basais de G. sepium, mas n?o apresentou influ?ncia no enraizamento. Nas condi??es avaliadas apenas a G. sepium apresentou potencial para a reprodu??o por estaquia. O uso de estacas obtidas a partir da base dos ramos mostraram-se mais eficientes na propaga??o das esp?cies florestais. O uso do fitoregulador n?o influenciou o enraizamento, no entanto, mostrou potencial no est?mulo do n?mero de brota??es nas estacas basais de G. sepium

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