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Manejo de Mancha angular (Phaeoisariopsis griseola) en el cultivo de fréjol (Phaseolus vulgaris L.)
| dc.contributor.advisor | Rojas Jorgge, Nessar | |
| dc.contributor.author | Monar Tocto, Jhonatan Raúl | |
| dc.date.accessioned | 2023-10-31T13:42:19Z | |
| dc.date.available | 2023-10-31T13:42:19Z | |
| dc.date.issued | 2023 | |
| dc.identifier.uri | http://dspace.utb.edu.ec/handle/49000/14926 | |
| dc.description | In the group of edible legumes, the common bean is one of the most important in the world, as it is an essential nutritional complement to the diet. The objective was to detail the management of Angular Spot (Phaeoisariopsis griseola) in bean cultivation (Phaseolus vulgaris L.). The conclusions determined that research has been carried out on the characterization of pathogen races and the identification of plant material with various levels of resistance, but in Ecuador there are no studies that specifically mention the genes linked to resistance to foliar diseases; INIAP has different cultivars, including INIAP-484 Centenario and INIAP-414 Yunguilla, which are completely resistant to anthracnose and angular spot; INIAP-483 Intag, which in particular presents some resistance to some races of pathogens associated with anthracnose and angular spot, as well as rust and root rot; and finally, INIAP-402, which has traits indicative of partial genetic resistance to angular spot; the foliage, pods and seeds of the bean are attacked by angular spot; The disease first appears as small, shiny gray spots on the leaves, which then grow and take the shape of veins. The stain turns dark brown as it progresses. On the underside of the leaf you can see small, dark gray, rod-shaped structures; The spots are dark reddish, round in shape and have a distinctive edge on the pods. Around the fourth week after sowing, the disease usually manifests itself. When these occur early in the crop cycle, severe attacks result in yellowing and dropping of leaves, which reduces yield and the use of resistant varieties is a disease management strategy, as has been noted in other research, because these varieties have a greater capacity to resist or mitigate the effects of the disease. | es_ES |
| dc.description | In the group of edible legumes, the common bean is one of the most important in the world, as it is an essential nutritional complement to the diet. The objective was to detail the management of Angular Spot (Phaeoisariopsis griseola) in bean cultivation (Phaseolus vulgaris L.). The conclusions determined that research has been carried out on the characterization of pathogen races and the identification of plant material with various levels of resistance, but in Ecuador there are no studies that specifically mention the genes linked to resistance to foliar diseases; INIAP has different cultivars, including INIAP-484 Centenario and INIAP-414 Yunguilla, which are completely resistant to anthracnose and angular spot; INIAP-483 Intag, which in particular presents some resistance to some races of pathogens associated with anthracnose and angular spot, as well as rust and root rot; and finally, INIAP-402, which has traits indicative of partial genetic resistance to angular spot; the foliage, pods and seeds of the bean are attacked by angular spot; The disease first appears as small, shiny gray spots on the leaves, which then grow and take the shape of veins. The stain turns dark brown as it progresses. On the underside of the leaf you can see small, dark gray, rod-shaped structures; The spots are dark reddish, round in shape and have a distinctive edge on the pods. Around the fourth week after sowing, the disease usually manifests itself. When these occur early in the crop cycle, severe attacks result in yellowing and dropping of leaves, which reduces yield and the use of resistant varieties is a disease management strategy, as has been noted in other research, because these varieties have a greater capacity to resist or mitigate the effects of the disease. | es_ES |
| dc.description.abstract | En el grupo de las leguminosas comestibles, el frijol común es una de las más importantes en el mundo, por ser complemento nutricional indispensable en la dieta alimentaria. El objetivo planteado fue detallar lo referente al manejo de Mancha angular (Phaeoisariopsis griseola) en el cultivo de fréjol (Phaseolus vulgaris L.). Las conclusiones determinaron que se han realizado investigaciones sobre la caracterización de razas de patógenos y la identificación de material vegetal con diversos niveles de resistencia, pero en el Ecuador no existen estudios que mencionen específicamente los genes vinculados a la resistencia a enfermedades foliares; INIAP cuenta con diferentes cultivares, entre ellos INIAP-484 Centenario e INIAP-414 Yunguilla, los cuales son completamente resistentes a la antracnosis y la mancha angular; INIAP-483 Intag, que en particular presenta cierta resistencia a algunas razas de patógenos asociados a la antracnosis y la mancha angular, así como a la roya y la pudrición de la raíz; y finalmente, INIAP-402, que tiene rasgos indicativos de resistencia genética parcial a la mancha angular; el follaje, las vainas y las semillas del frijol son atacados por una mancha angular; la enfermedad aparece primero como pequeñas manchas de color gris brillante en las hojas, que luego crecen y adoptan la forma de venas. La mancha se vuelve de color marrón oscuro a medida que avanza. En la parte inferior de la hoja se pueden ver pequeñas estructuras en forma de varilla, de color gris oscuro; las manchas son de color rojizo oscuro, de forma redonda y tienen un borde distintivo en las vainas. Alrededor de la cuarta semana después de la siembra, la enfermedad suele manifestarse. Cuando estos ocurren temprano en el ciclo del cultivo, los ataques severos resultan en el amarillamiento y caída de las hojas, lo que reduce el rendimiento y el uso de variedades resistentes es una estrategia de manejo de enfermedades, como se ha señalado en otras investigaciones, porque estas variedades tienen mayor capacidad para resistir o atenuar los efectos de la enfermedad. | es_ES |
| dc.format.extent | 24 p. | es_ES |
| dc.language.iso | es | es_ES |
| dc.publisher | BABAHOYO: UTB, 2023 | es_ES |
| dc.rights | Atribución-NoComercial-SinDerivadas 3.0 Ecuador | * |
| dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/ec/ | * |
| dc.subject | Fréjol | es_ES |
| dc.subject | Enfermedades | es_ES |
| dc.subject | Rendimiento | es_ES |
| dc.subject | Manejo | es_ES |
| dc.title | Manejo de Mancha angular (Phaeoisariopsis griseola) en el cultivo de fréjol (Phaseolus vulgaris L.) | es_ES |
| dc.type | bachelorThesis | es_ES |
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