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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

Patogenicidade de Beauveria bassiana e Metarhizium anisopliae em lagartas da broca - das - cucurbitáceas Diaphania hyalinata (Lepidoptera: Pyralidae) / Patogenecity of Beauveria bassiana and Metarhizium anisopliae fungus in melonworm Diaphania hyalinata (Lepidoptera: Pyralidade)

Oliveira, Regina Gonçalves dos Santos 24 August 2007 (has links)
Made available in DSpace on 2016-12-23T14:37:35Z (GMT). No. of bitstreams: 1 texto completo.pdf: 412060 bytes, checksum: 4f6e2489a627abd31089b425ac87ef6f (MD5) Previous issue date: 2007-08-24 / The effect of isolates of Beauveria bassiana (Balsamo) Vuillemin.: CCAE-7 and ESALQ 447; Metarhizium anisopliae (Mestchnikoff) Sorokin: PL43 and Boveril Organic® and Metarril Organic® was assessed for the control of Diaphania hyalinata Linnaeus, in 2°, 3°, 4° and 5° larval instar.The experiments were carried out in climatized chamber using temperature of 25 + 1°C, relative humidity of 70%, and photofase of 12 hours, in the laboratory. The experiments were arranged in a completely randomized desing with 5 treataments and 4 repetitions. Patogenicity bioassays in the concentrations of 1x103, 1x104, 1x105, 1x106, 1x107 and 1x108 conidia/ mL + Tween® 80 for the isolate CCAE-7, ESALQ 447 and PL43 and, concentrations of 0.10; 0.15; 0.25; 0.40; 0.63 and 1.00 g/ mL + Tween® 80 for Boveril Organic® and Metarril Organic®. The mortality was assessed every day. The mortality indexes was calculated using the Abbott equation for each treatment. The CCAE-7 was the most efficient isolate for the control of Diaphania hyalinata L., with the highest correct mortality (69,27 %) in the concentration of 1x108 in the 2° larval instar. / Avaliou-se o efeito de dois isolados de Beauveria bassiana (Balsamo) Vuillemin (CCAE-7 e ESALQ 447), o isolado de Metarhizium anisopliae (Mestchnikoff) Sorokin: (PL43) e dois formulados comerciais (Boveril Organic ® e Metarril Organic®) no controle de Diaphania hyalinata (Linnaeus) no 2º, 3º, 4º e 5º ínstares. Os experimentos foram mantidos em condições laboratoriais, em câmara climatizada à temperatura de 25 + 1ºC, umidade relativa de 70 + 10%, e fotofase de 12 horas, conduzidos em delineamentos inteiramente casualizados, com 5 tratamentos e 4 repetições. Foram realizados bioensaios de patogenicidade nas concentrações 1x103; 1x104; 1x105; 1x106; 1x107 e 1x108 conídios/ mL + Tween® 80 para o isolado CCAE-7, ESALQ 447 e PL43 e, nas concentrações 0,10; 0,15; 0,25; 0,40; 0,63; 1,00 g/ mL + Tween® 80 para Boveril Organic® e Metarril Organic®. A mortalidade foi avaliada diariamente, calculando-se os índices de mortalidade corrigida pela fórmula de Abbott para cada tratamento. O isolado CCAE-7 apresentou melhor eficiência no controle, com maior mortalidade corrigida (69,27 %) na concentração 1x108 no 2° ínstar.

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