Resumen

WARNOCK, Rosemary et al. Leaf area, leaf area components and yield of six bean genotypes. Agronomía Trop. [online]. 2006, vol.56, n.1, pp.21-42. ISSN 0002-192X.

Simulation models are powerful tools for quantitatively evaluating agricultural production scenarios, but they require leaf area information for the crop to be simulated, which in Venezuela is scarce. Data is presented for leaf area, leaf area components and yield obtained from field experiments planted with six bean, Phaseolus vulgaris L., genotypes on November 2001 in Maracay (MCY) and Saman Mocho (SM), Venezuela, using two contrasting soil types which are representative of the Valencia Lake basin. The field methodology employed allowed the procurement of reliable and representative sets of leaf area data for the genotypes evaluated. Genotypes DP-01-98-007 and Magdaleno exhibited a greater degree of indeterminate behaviour in both sites, being displayed as late as the stage of full grain formation (R6). Number, length and maximum width of leaflets may be used for estimating leaf area through regression procedures, due to their high correlations with leaf area. In SM the values of the components of leaf area and yield (50%) were higher than in MCY. Genotypes MEM-01-00-16 in SM and AM-03-00-06 in MCY had the highest final yield values and superior values during the growth cycle for the variables total number of leaflets per plant, leaflet length, leaflet maximum width and leaf area, whereas the genotype used as control, Magdaleno, had the lowest values.

Palabras clave : Phaseolus vulgaris L; bean; leaf area; leaf area index; leaf area components; yield.

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