Estado actual y proyección de la investigación relacionada con mancha angular del frijol (Phaeoisariopsis griseola)
Angular leaf spot of common bean, Phaseolus vulgaris L., is caused by the fungus Phaeoisariopsis griseola (Sacc.) Ferraris. This disease is widely distributed in tropical and subtropical countries where it affects pod quality and cause high yield losses. Because knowledge of the genetic diversity an...
| Main Authors: | , , |
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| Format: | Journal Article |
| Language: | Español |
| Published: |
2001
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/44305 |
| _version_ | 1855521405180837888 |
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| author | Jara, Carlos E. Castellanos, G. Mahuku, George S. |
| author_browse | Castellanos, G. Jara, Carlos E. Mahuku, George S. |
| author_facet | Jara, Carlos E. Castellanos, G. Mahuku, George S. |
| author_sort | Jara, Carlos E. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Angular leaf spot of common bean, Phaseolus vulgaris L., is caused by the fungus Phaeoisariopsis griseola (Sacc.) Ferraris. This disease is widely distributed in tropical and subtropical countries where it affects pod quality and cause high yield losses. Because knowledge of the genetic diversity and pathogenic variation of the pathogen is nec essary for the identification of durable sources of resistances for a breeding program, we used a set of 12 common bean differential varieties to characterize 419 P. griseola isolates collected from differ ent zones and countries of the world were beans are grown. All iso lates from Africa and Latin America were distributed into two large groups, Andean and Mesoamerican that were highly correlated to common bean gene pools. Only 21 of the 120 races identified were found in more than one country, where as 71 were only found in one country. Some races (68) were present only in Latin America while 31 races were found only in Africa, showing that use of resistant varieties to manage angular leaf spot can be specific for different regions. Evaluations of germplasm accessions and advanced lines resulted in 11 genotypes that were resistant to the most virulent race (63-63) under greenhouse conditions. These genotypes constitute potential sources of resistance genes for a breeding program and should be evaluated under field conditions in different regions where ALS is an important production constraint. |
| format | Journal Article |
| id | CGSpace44305 |
| institution | CGIAR Consortium |
| language | Español |
| publishDate | 2001 |
| publishDateRange | 2001 |
| publishDateSort | 2001 |
| record_format | dspace |
| spelling | CGSpace443052025-11-12T05:54:32Z Estado actual y proyección de la investigación relacionada con mancha angular del frijol (Phaeoisariopsis griseola) Jara, Carlos E. Castellanos, G. Mahuku, George S. phaseolus vulgaris phaeoisariopsis griseola varieties genotypes disease resistance variedades genotipos resistencia a la enfermedad Angular leaf spot of common bean, Phaseolus vulgaris L., is caused by the fungus Phaeoisariopsis griseola (Sacc.) Ferraris. This disease is widely distributed in tropical and subtropical countries where it affects pod quality and cause high yield losses. Because knowledge of the genetic diversity and pathogenic variation of the pathogen is nec essary for the identification of durable sources of resistances for a breeding program, we used a set of 12 common bean differential varieties to characterize 419 P. griseola isolates collected from differ ent zones and countries of the world were beans are grown. All iso lates from Africa and Latin America were distributed into two large groups, Andean and Mesoamerican that were highly correlated to common bean gene pools. Only 21 of the 120 races identified were found in more than one country, where as 71 were only found in one country. Some races (68) were present only in Latin America while 31 races were found only in Africa, showing that use of resistant varieties to manage angular leaf spot can be specific for different regions. Evaluations of germplasm accessions and advanced lines resulted in 11 genotypes that were resistant to the most virulent race (63-63) under greenhouse conditions. These genotypes constitute potential sources of resistance genes for a breeding program and should be evaluated under field conditions in different regions where ALS is an important production constraint. La mancha angular del frijol común, Phaseolus vulgaris L., es causada por el hongo Phaeoisariopsis griseola (Sacc.) Ferraris. Esta enferme dad esta ampliamente distribuida en las zonas tropicales y subtropica les y afecta la calidad de las vainas, reduce el peso de la semilla y puede causar elevadas pérdidas en los rendimientos. El conocimiento de la diversidad y variación patogénica del hongo es necesario para identificar fuentes de resistencia confiables para un programa de mejo ramiento. En este estudio se utilizó un juego de 12 variedades diferen ciales para caracterizar por virulencia 419 aislamientos de P. griseola colectados de diferentes zonas de producción de frijol de todo el mun do. Todos los aislamientos de Africa y Latinoamérica fueron distribui dos en dos grupos grandes, uno Andino y otro Mesoamericano, los cuales tienen una alta correlación con los acervos genéticos del frijol. De 120 razas identificadas, solo 21 están en mas de dos paises, mien tras que 71 se encuentran en solo un país. Sesenta y ocho razas están presentes solo en Latinoamérica y 31 razas en países Africanos, esto muestra que, el uso variedades resistentes para el manejo de mancha angular de frijol debería ser especifico por regiones. La evaluación de germoplasma y líneas avanzadas permitió identificar 11 genotipos resistentes a la raza más virulenta (raza 63-63) encontrada hasta aho ra. Estos genotipos constituyen una fuente potencial de genes resisten te a mancha angular de frijol y deben probarse en diversas regiones en el campo con el fin de identificar los genes de resistencia para utilizarlos en programas de mejoramiento. 2001 2014-10-02T08:33:34Z 2014-10-02T08:33:34Z Journal Article https://hdl.handle.net/10568/44305 es Open Access application/pdf |
| spellingShingle | phaseolus vulgaris phaeoisariopsis griseola varieties genotypes disease resistance variedades genotipos resistencia a la enfermedad Jara, Carlos E. Castellanos, G. Mahuku, George S. Estado actual y proyección de la investigación relacionada con mancha angular del frijol (Phaeoisariopsis griseola) |
| title | Estado actual y proyección de la investigación relacionada con mancha angular del frijol (Phaeoisariopsis griseola) |
| title_full | Estado actual y proyección de la investigación relacionada con mancha angular del frijol (Phaeoisariopsis griseola) |
| title_fullStr | Estado actual y proyección de la investigación relacionada con mancha angular del frijol (Phaeoisariopsis griseola) |
| title_full_unstemmed | Estado actual y proyección de la investigación relacionada con mancha angular del frijol (Phaeoisariopsis griseola) |
| title_short | Estado actual y proyección de la investigación relacionada con mancha angular del frijol (Phaeoisariopsis griseola) |
| title_sort | estado actual y proyeccion de la investigacion relacionada con mancha angular del frijol phaeoisariopsis griseola |
| topic | phaseolus vulgaris phaeoisariopsis griseola varieties genotypes disease resistance variedades genotipos resistencia a la enfermedad |
| url | https://hdl.handle.net/10568/44305 |
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