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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.
41

Propagação de pitangueira via miniestaquia / Propagation of Surinam Cherry by minicutting

Carvalho, Geniane Lopes 03 December 2012 (has links)
Submitted by Gabriela Lopes (gmachadolopesufpel@gmail.com) on 2016-09-28T13:49:24Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Dissertação_Geniane_Lopes_Carvalho.pdf: 819405 bytes, checksum: f22f88ad943127cecb020f19b9495b8a (MD5) / Approved for entry into archive by Aline Batista (alinehb.ufpel@gmail.com) on 2016-09-28T18:55:05Z (GMT) No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Dissertação_Geniane_Lopes_Carvalho.pdf: 819405 bytes, checksum: f22f88ad943127cecb020f19b9495b8a (MD5) / Made available in DSpace on 2016-09-28T18:55:05Z (GMT). No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Dissertação_Geniane_Lopes_Carvalho.pdf: 819405 bytes, checksum: f22f88ad943127cecb020f19b9495b8a (MD5) Previous issue date: 2012-12-03 / Conselho Nacional de Pesquisa e Desenvolvimento Científico e Tecnológico - CNPq / O presente trabalho teve como objetivo estudar a propagação de mudas clonadas de pitangueira preta, oriundas da técnica de miniestaquia, sendo realizados três experimentos, organizados em três artigos. O primeiro artigo aborda o enraizamento de miniestacas de seleção de pitangueira preta obtidas na Embrapa Clima Temperado, com diferentes concentrações de ácido indolbutírico (0, 1000, 2000 mg.L-1) associado a dois tipos de ramos (miniestacas herbáceas e lenhosas). Foi avaliada a porcentagem de sobrevivência e enraizamento, número de raízes, comprimento de raízes, número de brotações e comprimento das brotações. Foi observado influência positiva do regulador de crescimento no enraizamento das miniestacas, sendo a concentração de 2000 mg L-1 a mais eficiente com o material herbáceo. Quanto ao segundo artigo, foi testado na concentração pré-definida do primeiro capítulo, com ramos herbáceos com e sem a presença do ápice, com delineamento de cinco repetições de 30 miniestacas cada. Foram avaliadas a porcentagem de sobrevivência, enraizamento, número de raízes, comprimento de raízes, número de brotações e comprimento das brotações. Foi observada diferença significativa nas miniestacas apicais que apresentaram maior porcentagem de enraizamento, com médias entre 80 e 100%. No terceiro artigo, foi testada a dinâmica de enraizamento de miniestacas de pitangueira, no período de dois meses, a partir de 20 miniestacas avaliadas semanalmente, sendo as variáveis analisadas: número de miniestacas com primórdios radiculares (intumescência e pontos brancos na lesão realizada na base); porcentagem de enraizamento; número de raízes; comprimento de raízes; e raízes com mais de um centímetro. As miniestacas demonstraram um aumento gradativo do enraizamento de acordo com o tempo de cultivo. Conclui-se, que com sete semanas as miniestacas estão aptas ao transplante. / The present experiment was to study some aspects related to the propagation and growth of seedlings pitangueira, from cuttings. For this, there were three chapters. The first article discusses the rooting of cuttings selection Cherry Surinam black courtesy Embrapa Clima Temperado, with different concentrations of indole butyric acid (IBA) (0, 1000, 2000 mg.L1) associated with two kinds of branches (cuttings and herbaceous woody). It was evaluated the survival and rooting percentage, number of roots, root length, number of shoots and shoot length. It was observed positive influence of growth regulators on rooting, and the concentration of 2000 mg L-1 to more efficient with herbaceous material. The second article was tested at a concentration of predefined first chapter, herbaceous branches with and without the presence of the apex, design with five replicates of 30 cuttings each. It was evaluated the survival and rooting percentage, number of roots, root length, number of shoots and shoot length. Significant difference in apical cuttings that had higher rooting percentage, average between 80 and 100%. In the third article, was tested to determine the optimization time of rooting of cuttings of Surinam cherry, within two months, 20 cuttings were evaluated throughout the week and the variables analyzed were number of cuttings to root primordia (swelling and white spots on injury held at the base), rooting percentage, number of roots, length of roots and roots with more than an centimeters. In general, the cuttings have shown a gradual increase in growth according to the cultivation time. It was concluded that seven weeks the cuttings were able to transplant in plastic bags forming a seedling quality.

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