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Master's Dissertation
DOI
https://doi.org/10.11606/D.11.1985.tde-20220207-224805
Document
Author
Full name
Heloisa Maria Cabrini
Institute/School/College
Knowledge Area
Date of Defense
Published
Piracicaba, 1985
Supervisor
Title in Portuguese
Ocorrência de isolados de Botrytis cinerea Pers. ex Fr. resistentes a Benomyl em morangos (Fragaria spp.) no estado de São Paulo
Keywords in Portuguese
FUNGOS FITOPATOGÊNICOS
MOFO CINZENTO
MORANGO
RESISTÊNCIA AO FUNGICIDA
Abstract in Portuguese
Foram feitos levantamentos do agente do mofo cinzento de morangos, provenientes de Atibaia, Campinas, Piedade, Valinhos e Piracicaba (S.P.). Dos 52 isolados conseguidos, 12, procedentes de Atibaia, se mostraram resistentes a 100μg/ml de benomyl. Desses 12, 4, testados a 1000μg de benomyl/ml, apresentaram algum crescimento. Comparações in vitro desses 4 com 1 isolado sensível a benomyl evidenciaram que, de um modo geral, os resistentes esporulam e crescem menos do que o sensível em meio de BDA. Comparações desses mesmos isolados em relação a sensibilidade aos fungicidas captafol, captan, iprodione e procymidone não evidenciaram diferenças muito marcantes entre os isolados resistentes, como um grupo, e o sensível. Todos os isolados testados foram altamente sensíveis ao procymidone e ao iprodione.
Title in English
Benomyl-resistant isolates of Botrytis cinerea Pers. ex Fr. occurring on strawberries (Fragaria spp.) in the state of São Paulo
Abstract in English
Gray mold surveys were made,on strawberries from Atibaia, Campinas, Piedade, Valinhos and Piracicaba (S.P.). Of the 52 isolates obtained, 12, from Atibaia were resistant to 100 μg/ml of benomyl. Of these 12, 4 were tested at 1000 μg of benomyl/ml, and showed some growth at this concentration. In vitro comparisons of these 4 isolates with benomyl-sensitive showed that, in general, the resistant ones sporulate and grow less than the benomyl-sensitive isolate in PDA medium. Comparisons of the same isolates in relation to sensitivity to the fungicides captafol, captan, iprodione and procymidone have not showed evident differences between resistant isolates, as a group, and the sensitive one. All isolates tested, irrespective of being benomyl-resistant or benornyl-sensitive, were highly sensitive to procymidone and iprodione.
 
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Publishing Date
2022-02-07
 
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