During 1984 evaluations for resistance to Empoasca kraemeri, Apion godmani, and seed-infesting bruchids were continued. Some bean accessions were also evaluated for their reaction to the slug Vaginulus plebeius. Several red-and white-seeded selections from crosses for resistance to E. kraemeri re...
Durante 1984 se realizaron evaluaciones por resistencia a Empoasca kraemeri, Apion godmani y gorgojos que infestan la semilla. Tambien se evaluaron algunas accesiones de frijol por su reaccion a la babosa Vaginulus plebeius. Algunas selecciones de semilla blanca y roja de los cruzamientos por res...
In the 2nd growing season of 1984, reduced no. of materials were used to evaluate the present screening strategy and study mechanisms of drought tolerance. The new materials evaluated included 14 lines from the Brazilian national program, 100 lines from EP/84, and 3 Phaseolus vulgaris x P. acutif...
En la segunda estacion de crecimiento de 1984, se utilizo un no. reducido de materiales para evaluar la estrategia de seleccion actual y estudiar los mecanismos de tolerancia a la sequia. Los nuevos materiales evaluados incluyeron 14 lineas del progama nacional del Brasil, 100 lineas de EP/84 y 3...
In 1984 the nutrition and quality lab. evaluated 390 advanced lines from the EP 84 for seed quality, percentage of water absorbance from dry wt., presence of hard and broken seeds, av. cooking time, soup quality, and protein content. Results suggest that shiny grains tend to resist absorbing wate...
El lab. de nutricion y calidad en 1984 evaluo 390 lineas avanzadas provenientes de EP 84 en cuanto a calidad de la semilla, porcentaje de absorcion de agua a partir del peso seco, presencia de semillas duras y partidas, tiempo de coccion prom., calidad del caldo y contenido de proteina. Los resul...
During 1984 several types of interspecific crosses between Phaseolus vulgaris and P. coccineus, generated in the collaborative project with the U. of Gembloux, Belgium, were tested to evaluate their yield potential. Significant differences were observed between the crosses tested and among sister...
Durante 1984 se estudiaron varios tipos de cruzamientos interespecificos entre Phaseolus vulgaris y P. coccineus generados en el proyecto colaborativo con la U. de Gembloux, Belgica, para evaluar su potencial de rendimiento. Se observaron diferencias significativas entre los cruzamientos evaluado...
A simple test for evaluating membrane stability is briefly described. In a comparison of 12 lines representing groups identified for cold, drought, or heat tolerance, cold tolerance was associated with greater membrane damage, and heat-tolerant materials showed the least damage. Drought-tolerant ...
Se describe brevemente un ensayo simple para evaluar la estabilidad de la membrana. En una comparacion de 12 lineas representativas de grupos identificados por tolerancia al frio, sequia o calor, la tolerancia al frio se asocio con mayor dano de la membrana, mientras que los materiales tolerantes...
Photoperiod screening has continued at CIAT-Palmira throughout 1984 using 18 h daylengths to delay flowering. Materials evaluated included lines from various EP and the germplasm collection and the results from previous screening efforts have been compiled into a list of photoperiod responses of ...
Durante 1984 continuo la seleccion por fotoperiodo en CIAT- Palmira utilizando longitudes del dia de 18 h para retardar la floracion. Los materiales evaluados incluyeron lineas de varios EP y la coleccion de germoplasma; los resultados de esfuerzos de seleccion anteriores se han compilado en una ...
Although lateness will continue to be sought as a route to absolute max. yield in the CIAT Bean Program, overall work on yield potential is also being directed toward other groups of materials including medium- and large-seeded lines and early maturing lines. It has consistently been observed tha...
Aunque se continuara buscando la madurez tardia como una via al rendimiento max. absoluto en el Programa de Frijol del CIAT, el trabajo en general sobre potencial de rendimiento tambien se esta dirigiendo hacia otros grupos de materiales que incluyen lineas de semilla mediana y grande y lineas de...
In 1984 the breeding for enhanced N fixation in agronomically acceptable bean cv. was continued. RIZ lines 10, 13, and 29 are performing well in international nurseries. They have high yield, good grain type, broad adaptation, and some disease resistance; however, it is difficult to assess if the...
En 1984, se continuo el mejoramiento para incrementar la fijacion de N en cv. de frijol agronomicamente aceptables. Las lineas RIZ 10, RIZ 13 y RIZ 29 se comportan bien en viveros internacionales. Presentan altos rendimientos, buen tipo de grano, amplia adaptacion y alguna resistencia a enfermeda...
The activities on character deployment involve the recombination or use of desirable characters (e.g., level of resistance to diseases and insect pests, tolerance to drought, ability to fix atmospheric N) in commercial cv., according to the needs of the particular production region for which the ...
Las actividades en despliegue de caracteres involucran la recombinacion o uso de caracteres deseables (como nivel de resistencia a enfermedades y plagas, tolerancia a sequia, capacidad fijadora de N atmosferico) en cv. comerciales, de acuerdo con las necesidades de la region productora especifica...
Research work carried out by CIAT in 1980 and results obtained are briefly analyzed: acquisition, evaluation, and distribution of germplasm; bush and climbing bean improvement; resistance to viral (BCMV, BYMV, soybean mosaic virus, bean chlorotic mottle virus, and BGMV), fungal (rust, anthracnose...
Se analizan en detalle el trabajo de investigacion realizado en CIAT en 1980 y los resultados obtenidos sobre adquisicion, evaluacion y distribucion de germoplasma; mejoramiento de frijol arbustivo y trepador; resistencia a enfermedades virales (BCMV, BYMV, virus del mosaico de la soya, virus mot...
