The objective this work was to identify beans cultivars with broad or specific adaptability in different planting times and with yield stability in the central depression region of Rio Grande do Sul to guide breeding programs. The experiments were conducted in the area of the Plant Science Department at the Santa Maria Federal University in three agricultural years in two traditional cropping seasons: rainy (September-October, favorable environment) and dry (January-February, unfavorable environment). A complete randomized experimental blocks design with three replications and 16 registred common bean cultivars were used. Carioca, Iapar 31, Minuano, PR 468 e TPS Bionobre cultivars were identified with mean yield compared to the overall yield, broad adaptability and high stability. The TPS Nobre showed specific adaptability to rainy growing season and Iraí and Pérola showed specific adaptability to dry growing season.
Phaseolus vulgaris L.; grain yield; genotype x environment interaction
