Yield losses caused by bean amachamiento and reaction of commercial germoplasm to disease.
Guardado en:
| Autores: | , |
|---|---|
| Formato: | artículo original |
| Estado: | Versión publicada |
| Fecha de Publicación: | 2012 |
| Descripción: | Yield losses caused by bean amachamiento and reactionof commercial germoplasm to disease. Yield lossescaused by common bean “amachamiento” (Aphelenchoidesbesseyi) was determined in fi eld plots from 2007 through2008 in the Brunca and Huetar Norte production regions ofCosta Rica, as well as the reaction of commercial varieties tothe pathogen during 2009 in the Brunca region. In commonbean seed reproduction fi elds of the cultivar Cabecar, 83micro-plots (3 m long on rows) were established to evaluateyield losses, during the V3 or V4, R6 and R8 phenologicalstages. Yield components were quantifi ed in each micro-plotand by regression and correlation statistical analysis yieldlosses were estimated. The bean cultivar reaction to thedisease was evaluated by natural inoculum pressure in tenplants of Bribri, Chánguena, Cabécar, Gibre, Chirripó, Guaymíand Brunca varieties; pod production was comparedto non-inoculated plants. T-tests for independent sampleswas applied to this plant population. Yield losses in thefi eld reached 71 to 80% in pod production and 70 to 85% inyield. Seeds per pod (0-16%) and 100-seed weight (0-19%)were non-signifi cant. None of the bean commercial varietiesshowed resistance to the disease. |
| País: | Portal de Revistas UCR |
| Institución: | Universidad de Costa Rica |
| Repositorio: | Portal de Revistas UCR |
| Lenguaje: | Español |
| OAI Identifier: | oai:portal.ucr.ac.cr:article/2013 |
| Acceso en línea: | https://revistas.ucr.ac.cr/index.php/agromeso/article/view/2013 |
| Access Level: | acceso abierto |
| Palabra clave: | Aphelenchoides besseyi Phaseolus vulgaris L. nematodo foliar falsa mancha angular foliar nematode false angular leaf spot. |