Desarrollo y validación de una técnica de inoculación a campo de Sclerotinia minor en el cultivo de maní
Sclerotinia minor causes peanut blight, a disease hat generates losses to the crop. S. minor produces sclerotia as a resistance structure and is found in aggregate form in the field, making it difficult to evaluate disease control tools. It is necessary to develop an inoculation technique hat all...
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| Autores principales: | , , , , , , |
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| Formato: | Artículo revista |
| Lenguaje: | Español |
| Publicado: |
Facultad de Ciencias Agropecuarias
2021
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| Materias: | |
| Acceso en línea: | https://revistas.unc.edu.ar/index.php/agris/article/view/31060 |
| Aporte de: |
| Sumario: | Sclerotinia minor causes peanut blight, a disease hat generates losses to the crop. S. minor produces sclerotia as a resistance structure and is found in aggregate form in the field, making it difficult to evaluate disease control tools. It is necessary to develop an inoculation technique hat allows homogenizing the inoculum in each experimental unit. The objectives of this work were: to develop and validate a field inoculation methodology for S. minor in peanuts, and to evaluate the behavior of different genotypes of the crop. Sclerotia of S. minor were isolated and quantified from soil samples, subpopulations were selected and the inoculum was produced in two liquid culture media. The inoculum generated was applied in the field on ten peanut genotypes, the intensity of the disease and the homogeneity of response were evaluated. The number of sclerotia in soil was 0.81/100 g before and 2.07/100 g after inoculation. S. minor grew in both culture media, but potato dextrose agar broth presented greater advantages. The inoculation technique was successful at achieving homogenous incidence values among repetitions. Significant statistical differences were observed in the behavior of the genotypes towards the disease. |
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