Genetic improvement and related activities. Improvement of individual characters. Photoperiod-temperature adaptation

Evaluation of photoperiod bean response in flowering screening continued at CIAT-Palmira, using artificial 18 h daylengths to delay flowering. Approx. 600 germplasm accessions were evaluated in 1986 as a part of continuing efforts to characterize responses of germplasm in different bean production regions. To introduce desirable characteristics into Phaseolus vulgaris, 70 accessions of 3 other Phaseolus species (P. acutifolius, P. coccineus, and P. lunatus) were also evaluated. P. acutifolius and P. coccineus were notable for their high levels of sensitivity. Results are included in table form. (CIAT)La evaluacion de la respuesta del frijol al fotoperiodo en la seleccion por floracion continuo en CIAT-Palmira, utilizando fotoperiodos artificiales de 18 h para retrasar la floracion. Se evaluaron aprox. 600 accesiones de germoplasma en 1986 como parte de esfuerzos continuos para caracterizar respuestas de germoplasma en distintas regiones productoras de frijol. Tambien se evaluaron 70 accesiones de otras 3 especies de Phaseolus (P. acutifolius, P. coccineus y P. lunatus), para introducir caracteristicas deseables a P. vulgaris. P. acutifolius y P. coccineus se destacaron por sus altos niveles de sensibilidad. Se incluyen los resultados tabulados. (CIAT