Selection of isolates of Beauveria bassiana pathogenic to cotton boll weevil

Selection of isolates of Beauveria bassiana pathogenic to cotton boll weevil

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The objective of this work was to screen pathogenic isolates of Beauveria bassiana (Balsamo) Vüillemin from different hosts and geographic regions, pathogenic to the cotton boll weevil. Twelve isolates were evaluated. Isolates originally obtained from boll weevil showed low pathogenicity against this host. Insect mortality began on the second day after inoculation by fungal suspension, ranging from 15% to 83%, with a TL50 of 5.30 to 11.06 days. Variability among isolates concerning conidial germination in artificial culture medium was verified, and TG50 did not correlate with pathogenicity. One of the most virulent isolates of B. bassiana against cotton boll weevil is CG138.

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Main Author: Silva, Carlos Alberto Domingues da
Format: Digital revista
Language:por
Published: Pesquisa Agropecuaria Brasileira 2001
Online Access:https://seer.sct.embrapa.br/index.php/pab/article/view/6125
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spelling rev-pab-br-article-61252014-11-05T18:53:45Z Selection of isolates of Beauveria bassiana pathogenic to cotton boll weevil Seleção de isolados de Beauveria bassiana patogênicos ao bicudo-do-algodoeiro Silva, Carlos Alberto Domingues da Anthonomus grandis; cotton; pathogens; pathogenicity; pests of plants Anthonomus grandis; algodão; patógenos; patogenicidade; pragas de plantas The objective of this work was to screen pathogenic isolates of Beauveria bassiana (Balsamo) Vüillemin from different hosts and geographic regions, pathogenic to the cotton boll weevil. Twelve isolates were evaluated. Isolates originally obtained from boll weevil showed low pathogenicity against this host. Insect mortality began on the second day after inoculation by fungal suspension, ranging from 15% to 83%, with a TL50 of 5.30 to 11.06 days. Variability among isolates concerning conidial germination in artificial culture medium was verified, and TG50 did not correlate with pathogenicity. One of the most virulent isolates of B. bassiana against cotton boll weevil is CG138. Objetivou-se selecionar isolados de Beauveria bassiana (Balsamo) Vüillemin provenientes de diferentes hospedeiros e regiões geográficas, patogênicos ao Anthonomus grandis, o bicudo-do-algodoeiro. Foram analisados 12 isolados em condições de laboratório. Os isolados obtidos originalmente de A. grandis foram pouco virulentos a essa praga. A mortalidade do bicudo teve início no segundo dia após a inoculação das suspensões fúngicas, variando de 15% a 83%, com TL50 entre 5,30 a 11,06 dias. Os isolados apresentaram variabilidade quanto à germinação dos conídios em meio de cultura artificial, e esta não se correlacionou com a patogenicidade. O isolado CG138 de B. bassiana destacou-se como um dos mais virulentos ao bicudo-do-algodoeiro. Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira 2001-02-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://seer.sct.embrapa.br/index.php/pab/article/view/6125 Pesquisa Agropecuaria Brasileira; v.36, n.2, fev. 2001; 243-247 Pesquisa Agropecuária Brasileira; v.36, n.2, fev. 2001; 243-247 1678-3921 0100-104x por https://seer.sct.embrapa.br/index.php/pab/article/view/6125/3192
institution EMBRAPA
collection OJS
country Brasil
countrycode BR
component Revista
access En linea
databasecode rev-pab-br
tag revista
region America del Sur
libraryname Sistema de bibliotecas de EMBRAPA
language por
format Digital
author Silva, Carlos Alberto Domingues da
spellingShingle Silva, Carlos Alberto Domingues da
Selection of isolates of Beauveria bassiana pathogenic to cotton boll weevil
author_facet Silva, Carlos Alberto Domingues da
author_sort Silva, Carlos Alberto Domingues da
title Selection of isolates of Beauveria bassiana pathogenic to cotton boll weevil
title_short Selection of isolates of Beauveria bassiana pathogenic to cotton boll weevil
title_full Selection of isolates of Beauveria bassiana pathogenic to cotton boll weevil
title_fullStr Selection of isolates of Beauveria bassiana pathogenic to cotton boll weevil
title_full_unstemmed Selection of isolates of Beauveria bassiana pathogenic to cotton boll weevil
title_sort selection of isolates of beauveria bassiana pathogenic to cotton boll weevil
description The objective of this work was to screen pathogenic isolates of Beauveria bassiana (Balsamo) Vüillemin from different hosts and geographic regions, pathogenic to the cotton boll weevil. Twelve isolates were evaluated. Isolates originally obtained from boll weevil showed low pathogenicity against this host. Insect mortality began on the second day after inoculation by fungal suspension, ranging from 15% to 83%, with a TL50 of 5.30 to 11.06 days. Variability among isolates concerning conidial germination in artificial culture medium was verified, and TG50 did not correlate with pathogenicity. One of the most virulent isolates of B. bassiana against cotton boll weevil is CG138.
publisher Pesquisa Agropecuaria Brasileira
publishDate 2001
url https://seer.sct.embrapa.br/index.php/pab/article/view/6125
work_keys_str_mv AT silvacarlosalbertodominguesda selectionofisolatesofbeauveriabassianapathogenictocottonbollweevil
AT silvacarlosalbertodominguesda selecaodeisoladosdebeauveriabassianapatogenicosaobicudodoalgodoeiro
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