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| Miranda,Bruno Eduardo Cardozo de; Suassuna,Nelson Dias; Reis,Ailton. |
| The objective of this work was to characterize 79 Phytophthora infestans isolates collected in tomato (Solanum lycopersicum) fields, as to mating type, mefenoxam sensitivity, and pathotype composition. The isolates were sampled in 2006 and 2007 in seven Brazilian states as well as in the Distrito Federal. They were characterised as to mating type (n=79), sensitivity to fungicide mefenoxam (n=79), and virulence to three major resistance genes Ph-1, Ph-2, and Ph-3/Ph-4 (n=62). All isolates were of the mating type A1. Resistant isolates were detected in all sampled states, and its average frequency was superior to 50%. No difference was detected in pathotype diversity, neither between subpopulations collected in 2006 and 2007 nor between isolates grouped as... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lycopersicon esculentum; Solanum lycopersicum; Disease management; Fungicide resistance; Late blight; Pathogen variability. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2010000700006 |
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| Silva, Abimael Gomes; Souza, Ana Caroline de; Lopes, Beatriz Garcia; Silva, Eliamara Marques da; Vieira, Gustavo Haralampidou da Costa. |
| O uso de fungicidas sintéticos é uma das estratégias de manejo de doenças mais utilizadas na agricultura, porém, busca-se manejos que sejam mais sustentáveis. Dessa forma, objetivou-se avaliar o potencial de óleos essenciais de Cedrela fissilis e Mentha spicata no controle, in vitro, do crescimento micelial do patógeno Corynespora cassiicola. O trabalho foi desenvolvido no Laboratório de Fitossanidade da Universidade Estadual do Mato Grosso do Sul (UEMS), Unidade Universitária de Cassilândia-MS. Os óleos essenciais, Cedro (Cedrela fissilis) e Hortelã (Mentha spicata) foram adquiridos comercialmente. O delineamento experimental utilizado foi inteiramente casualizado, em esquema fatorial 2 categorias de óleos essenciais (hortelã e cedro) x 5 concentrações... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phytopathology; Fungicide resistance; Alternative control; Fitopatologia; Resistência a fungicidas; Controle alternativo. |
| Ano: 2021 |
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/6375 |
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| Álvarez-Medina,Adán; Silva-Rojas,Hilda V.; Leyva-Mir,Santos G.; Marbán-Mendoza,Nahum; Rebollar-Alviter,Ángel. |
| Abstract Gray mold caused by Botrytis cinerea Pers. is one of the most important diseases of strawberry (Fragaria x ananassa Duch.), and fungicide resistance is a concern. The objective of this research was to evaluate the sensitivity of B. cinerea isolates to the fungicides iprodione and thiophanate-methyl in two strawberry-producing areas in Mexico. Sixty-two B. cinerea isolates collected from strawberry fruits from Maravatio Valley (MV) and Zamora-Jacona Valley (ZJ) in Michoacan, Mexico, were used to determine the sensitivity distribution based on mycelium growth (MG) and conidial germination (CG). Each monosporic isolate was grown in 4 plates containing media amended with 0, 0.1, 0.5, 1, 10, 50 and 100 µg mL-1 of iprodione and 0, 0.1, 10, 100, 1000 and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fungicide resistance; Benzimidazole; Dicarboximides. |
| Ano: 2017 |
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000700783 |
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