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A summary of the characteristics of the Ist international trials and the results of the lst expts are given. The 1976 IBYAN trial consisted of 20 CIAT var. + 5 local var. Ninety expts were distributed among 30 countries. Exptl procedures were uniform and the collaborators were instructed to use c...


Voysest Voysest, Oswaldo[Metodologia y analisis de resultados de los primeros ensayos de Viveros Internacionales de Rendimiento y Adaptacion del Frijol, IBYAN]Metodologia y analisis de resultados de los primeros ensayos de Viveros Internacionales de Rendimiento y Adaptacion del Frijol, IBYAN

CIAT is currently the world center for all the germplasm of the genus Phaseolus. The bean program has the main objective of increasing bean production and productivity. Germplasm improvement involves a program of evaluation and identification of genetic diversity, improvement through more effecti...


Voysest Voysest, Oswaldo[Ensayos internacionales de rendimiento de frijol para monocultivo]Ensayos internacionales de rendimiento de frijol para monocultivo

The genetic changes occuring in av. productivity, adaptation, and response to environments with different levels of yield for black-colored grain material selected by CIAT during 1976-79 are examined. Data from 124 expt. of the International Bean Yield and Adaptation Nursery (IBYAN) of black bean...


Voysest Voysest, Oswaldo[Comportamiento en ambientes de diversos niveles de productividad de genotipos de frijol negro desarrollados en Colombia]Comportamiento en ambientes de diversos niveles de productividad de genotipos de frijol negro desarrollados en Colombia

The factors influencing the size and shape of exptl. field plots (area of exptl. lot, soil types, trial objective, no. of replicates, and degree of accuracy and homogeneity of the exptl. material) for the execution of field expt. are discussed. The basic principles of the following different meth...

Se discuten los factores (area de lote exptl., tipo de suelo, objetivo del ensayo, no. de repeticiones y grado de precision y homogeneidad del material exptl.) que influyen en el tamano y la forma de la parcela en la conduccion de expt. de campo. Se describen brevemente los principios basicos de ...


Voysest Voysest, Oswaldo[Tamano de parcela]Tamano de parcela

In Sept.-Dec. 1976 the ICA- Guali bean var. was planted (200,000 plants/ha) at CIAT, (Palmira, Colombia) to study the heterogeneity of the experimental plot; to map fertility trends and to determine correlation coefficients for adjoining plots as measures for these trends; to determine several pl...


Baena, DiosdadoAmézquita, María CristinaRodríguez, P.M.Voysest Voysest, OswaldoTakegami, F[Estudio de la heterogeneidad del suelo, del tamano y formas de parcelas y del numero de repeticiones optimas en ensayos de uniformidad en frijol (Phaseolus vulgaris L.) [online]]Estudio de la heterogeneidad del suelo, del tamano y formas de parcelas y del numero de repeticiones optimas en ensayos de uniformidad en frijol (Phaseolus vulgaris L.) [online]

A yield trial with 25 black bean varieties was carried out on the CIAT experimental farm (Palmira, Colombia) to ascertain the efficiency and accuracy of a 5 x 5 lattice design with different no. of replications (2-6) and plot sizes (1, 2, 4 and 6 rows/plot with 1.5, 3.0, 6.0 and 9.0 m(2) areas, r...


Amézquita, María CristinaMuñoz, J.E.Voysest Voysest, Oswaldo[Eficiencia y precision del diseno en latices bajo distinto numero de repeticiones y tamano de parcela en ensayos de rendimiento de frijol (Phaseolus vulgaris L.)]Eficiencia y precision del diseno en latices bajo distinto numero de repeticiones y tamano de parcela en ensayos de rendimiento de frijol (Phaseolus vulgaris L.)

Using the data generated by VEF (vivero equipo de frijol) and EP (ensayo preliminar de rendimiento) nurseries during 1979-86, the progress of the CIAT Bean Program during this 8-yr period of plant breeding effort is described in terms of the production of disease resistant lines and the attainmen...


Amézquita, María CristinaVoysest Voysest, Oswaldo[Progress in disease resistance and yield potential: an analysis of VEF - EP Nurseries (1979 - 1986)]Progress in disease resistance and yield potential: an analysis of VEF - EP Nurseries (1979 - 1986)

The simultaneous effect that lateral and end border rows may have on yield was studied in experimental plots at CIAT (Palmira, Colombia), using 25 black bean varieties in a 5 x 5 balanced lattice design with 6 replications. Plots measured 12 m(2) (6 rows, 4 m long). Unharvested end rows measured ...


Muñoz, J.E.Amézquita, María CristinaVoysest Voysest, Oswaldo[Efecto de bordes en ensayos de rendimiento en frijol (Phaseolus vulgaris L.)]Efecto de bordes en ensayos de rendimiento en frijol (Phaseolus vulgaris L.)

In 1976 CIAT`s bean program initiated international trials on bean yields and organized the International Bean Yield and Adaptation Nursery (IBYAN) with the following objectives: (a) to evaluate the yield and adaptation of promising germplasm selections under different environmental conditions, r...


Voysest Voysest, Oswaldo[Resultados del primer Vivero Internacional de Rendimiento y Adaptacion de Frijol (Phaseolus vulgaris L.)]Resultados del primer Vivero Internacional de Rendimiento y Adaptacion de Frijol (Phaseolus vulgaris L.)

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