Detalhes bibliográficos
| Resumo: | Phytophthora cinnamomi (23 isolates) and P. cambivora (3 isolates), isolated from chestnut showing ink disease symptoms or from soil near dead roots of chestnut trees were tested to copper and phosphite sensitivity. Isolates were characterized using an amended agar assay. EC50 values (copper (or phosphite) concentration inhibiting mycelial growth of the pathogen by 50%) for each isolate were calculated by plotting probit percentage inhibition against log10 active ingredient (a.i.) concentration. EC50 values of copper ranged from 0.043×10-3 to 2.025×10-3 M in P. cinnamomi and 1.970×10-3 to 4.603×10-3 M in P. cambivora. EC50 values of phosphite ranged from 2.99 to 172.39 μg ml-1 in P. cinnamomi and 47.23 to 237.25 μg ml-1 in P. cambivora. This study may contribute to access the potential utility of these a.i. for managing ink disease of chestnut and to use in the future as benchmark for baseline sensitivity. |
|---|
| Autores principais: | Coelho, Valentim |
|---|
| Outros Autores: | Coutinho, S.; Gouveia, Maria Eugénia |
|---|
| Assunto: | Phytophthora cinnamomi P. cambivora Ink disease of chestnut |
|---|
| Ano: | 2005 |
|---|
| País: | Portugal |
|---|
| Tipo de documento: | comunicação em conferência |
|---|
| Tipo de acesso: | acesso aberto |
|---|
| Instituição associada: | Instituto Politécnico de Bragança |
|---|
| Idioma: | inglês |
|---|
| Origem: | Biblioteca Digital do IPB |
|---|