Bean rust (Uromyces phaseoli), a common disease with worldwide distribution, is considered one of the most important bean production problems in the tropics. Prolonged periods of moisture and moderate temp. (17-27 degrees C) favor disease development. The infection process begins when a urediospo...
La roya del frijol (Uromyces phaseoli) es una enfermedad a nivel mundial considerada como uno de los problemas mas importantes de la produccion de frijol en el tropico. Periodos prolongados de humedad y temp. moderadas (17-27 grados C) favorecen el desarrollo de la enfermedad. El proceso de infec...
Bean anthracnose, caused by the fungus Colletotrichum lindemuthianum, is a worldwide disease in susceptible var. grown in locations with cool to moderate temp. and with a high RH. It can appear anywhere in the plant. Losses can be up to 100 percent when severely infected seed is planted. For effi...
La antracnosis del frijol, causada por el hongo Colletotrichum lindemuthianum, es una enfermedad que se presenta en todo el mundo en las var. susceptibles establecidas en localidades con temp. moderadas-frias y con alta HR ambiental. Puede aparecer en cualquier parte de la planta. Las perdidas pu...
Angular leaf spot, caused by the fungus Isariopsis griseola in tropical and subtropical regions, can cause losses up to 50 percent. The pathogen infects the leaves by entering through the stomata or can be transmitted by the seed. Disease control can be carried out by cultural practices, use of d...
La mancha foliar angular, causada por el hongo Isariopsis griseola en las regiones tropicales y subtropicales, puede ocasionar perdidas de hasta 50 por ciento. El patogeno infecta las hojas penetrando a traves de los estomas o puede transmitirse por la semilla. El control de la enfermedad se pued...
Web blight, caused by the fungus Thanatephorus cucumeris, is prevalent in tropical regions with high to moderate temp. and RH; more than 200 plant species serve as hosts to this pathogen. Hyphae can grow rapidly over healthy tissue of leaves, flowers, petioles, and pods. For efficient control, th...
La mustia hilachosa, causada por el hongo Thanatephorus cucumeris, prevalece en las regiones tropicales con una temp. y HR entre moderada y alta; mas de 200 especies vegetales le sirven de hospedante al patogeno. Las hifas del hongo pueden crecer rapidamente en el tejido sano de las hojas, flores...
The etiology, symptomatology, cultural and chemical control measures, and general aspects of control through var. resistance to bean diseases are described for the following fungal pathogens: Uromyces phaseoli, Colletotrichum lindemuthianum, Isariopsis griseola, Rhizoctonia solani, Ascochyta phas...
Se describen la etiologia, sintomatologia, medidas de control cultural y quimico, y aspectos generales de control por resistencia var. de las enfermedades del frijol causadas por los patogenos fungicos Uromyces phaseoli, Colletotrichum lindemuthianum, Isariopsis griseola, Rhizoctonia solani, Asco...
The methodology used for the evaluation of bean germplasm for its reaction to diseases is described. Techniques for the isolation, conservation, inoculum increment, and plant inoculation are included for the pathogens Uromyces phaseoli, Colletotrichum lindemuthianum, Isariopsis griseola, Scleroti...
Se describe la metodologia utilizada en la evaluacion de germoplasma de frijol por su reaccion a enfermedades. Se incluyen las tecnicas para el aislamiento, la conservacion, el incremento del inoculo y la inoculacion de plantas con los patogenos Uromyces phaseoli, Colletotrichum lindemuthianum, I...
Pastor Corrales, Marcial A.
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[Tecnicas, materiales y metodos utilizados en la evaluacion de frijol por su reaccion a las enfermedades]
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Tecnicas, materiales y metodos utilizados en la evaluacion de frijol por su reaccion a las enfermedades
Fifty-three bean (Phaseolus vulgaris) accessions were evaluated for their reactions to infection by Macrophomina phaseolina under field and greenhouse conditions. A field nursery was established on an experimental farm near Santander de Quilichao, Colombia. All accessions were evaluated in paired...
Pastor Corrales, Marcial A.
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Abawi, G.S.
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[Reactions of selected bean accessions to infection by Macrophomina phaseolina]
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Reactions of selected bean accessions to infection by Macrophomina phaseolina
A Brazilian isolate of Fusarium oxysporum f. sp. phaseoli (F. o. f. sp. phaseoli) was used to determine the reactions of 66 lines of beans to the Fusarium yellows pathogen in greenhouse tests. The distal 1 cm of root tips of 1-wk-old seedlings grown in sterilized sand were removed, roots were dip...
Pastor Corrales, Marcial A.
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Abawi, G.S.
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[Reactions of selected bean germ plasm to infection by Fusarium oxysporum f. sp. phaseoli]
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Reactions of selected bean germ plasm to infection by Fusarium oxysporum f. sp. phaseoli
The procedures to be followed for the preparation of Rhizoctonia solani inoculum and of inoculum using R. solani micelium, and for the determination of R. solani populations in the soil (complete soil method, OM test, and pathogen attraction) are given. Recommendations for the International Web B...
Abawi, G.S.
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Pastor Corrales, Marcial A.
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[Preparado para el grupo participantes del Taller de Mustia]
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Preparado para el grupo participantes del Taller de Mustia
A standard system for the evaluation of bean germplasm under field conditions is described, including a table with the developmental stages of the common bean plant which is used in the proposed system. This system has been tested in Colombia and many countries in Latin America, Africa, and other...
Schoonhoven, Aart van
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Pastor Corrales, Marcial A.
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[Standard system for the evaluation of bean germplasm]
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Standard system for the evaluation of bean germplasm