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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

Toler?ncia de isolados de Pisolithus sp. a cupinicidas / Pisolithus sp. isolated of tolerance at termiticides

Antunes, L?dia Alves 19 August 2016 (has links)
?rea de concentra??o: Produ??o vegetal. / Submitted by Jos? Henrique Henrique (jose.neves@ufvjm.edu.br) on 2017-04-12T18:35:18Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) lidia_alves_antunes.pdf: 917012 bytes, checksum: b4a549d8c4b68dbfd230aee1440375df (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2017-04-24T17:43:24Z (GMT) No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) lidia_alves_antunes.pdf: 917012 bytes, checksum: b4a549d8c4b68dbfd230aee1440375df (MD5) / Made available in DSpace on 2017-04-24T17:43:24Z (GMT). No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) lidia_alves_antunes.pdf: 917012 bytes, checksum: b4a549d8c4b68dbfd230aee1440375df (MD5) Previous issue date: 2016 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / A imers?o de mudas de eucalipto em solu??es de cupinicidas antes do plantio pode influenciar o desempenho de programas de inocula??o com fungos ectomicorr?zicos (FEM) em viveiros comerciais, pois estes inseticidas podem interferir na simbiose. O objetivo deste trabalho foi avaliar a toler?ncia de isolados de Pisolithus sp. aos cupinicidas thiamethoxam, imidacloprid e fipronil. Discos de 5 mm de meio de cultura com mic?lio dos isolados D5, D17, D95, D216, D29, D10, D15, C9C, C16 e C13 de Pisolithus sp. foram pr?-imersos em solu??es com 3 g L-1 de thiamethoxam, 7,5 g L-1 imidacloprid e 7,5 g L-1 de fipronil. Ap?s este procedimento foram colocados para crescer por 10 dias em meio de cultura Melin-Norkrans modificado (MNM). Os cupinicidas foram avaliados em experimentos independentes. Em outra s?rie de experimentos, discos 5 mm dos isolados D5, D10 e D216 foram colocados para crescer por 20 dias em meio de cultura contendo 0 (controle), 0,4; 0,8 e 1,6 g L-1 de thiamethoxam, 3; 6 e 12 g L-1 de imidacloprid e 0 (controle); 3; 6 e 12 g L-1 de fipronil. O efeito dos cupinicidas sobre fungos ectomicorr?zicos foi dependente do isolado, do princ?pio ativo, do tempo de exposi??o e da concentra??o do cupinicida. Os isolados mais tolerantes a pr?-imers?o do mic?lio nos cupinicidas foram o C9C para o thiamethoxam, o D15 para o imidacloprid e o D10 para o fipronil. Os tr?s cupinicidas foram t?xicos aos isolados de Pisolithus sp. quando estes foram adicionados ao meio de cultura. Em geral, thiamethoxam foi o menos t?xico para os isolados de Pisolithus sp.. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Produ??o Vegetal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2016. / The immersion eucalyptus seedlings in termiticides solutions before planting can influence the performance of inoculation programs with ectomycorrhizal fungi (EMF) in commercial nurseries, as these insecticides can interfere with symbiosis. Study aimed at assessing the tolerance of Pisolithus sp. isolates to the termiticides thiamethoxam, imidacloprid and fipronil. 5-mm-diameter circular sections of culture medium with the mycelial isolates D5, D17, D95, D216, D29, D10, D15, C9C, C16 and C13 Pisolithus sp. were pre-dipped in solutions with 3 g L-1 of thiamethoxam, 7.5 g L-1, 7.5 g L-1 imidacloprid and fipronil. Next were placed let grow for 10 days through the cultured on modified Melin-Norkrans (MNM) solid medium. The termiticides were through independent testing. In another series of experiments, 5-mm-diameter circular sections of culture medium with the mycelial isolates D5, D10 and D216 were placed let grow for 20 days in solid medium containing 0 (control) 0.4; 0.8 and 1.6 g L-1 thiamethoxam 3; 6; 12 g L-1 of imidacloprid and 0 (control); 3; 6; 12 g L-1 fipronil. The effect of termiticides on ectomycorrhizal fungi was dependent of isolated, of active ingredient, of exposure time and concentration of termiticide. The most tolerant isolates the pre-soaking the mycelium in termiticides were C9C for thiamethoxam, the D15 for imidacloprid and D10 for fipronil. The three termiticides were toxic to isolates Pisolithus sp. when they were added to the culture medium. In general, thiamethoxam was less toxic to isolates Pisolithus sp.

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