The common bean is one of the most important crops in Brazil, and Minas Gerais state is one of its largest producers, representing about 15% of the national production. The aim of this study was to evaluate the performance of common bean lineages cultivated during the rainy and winter seasons in the Triângulo Mineiro region, Minas Gerais state, Brazil. In the rainy growing season (sowing in December, 2005) and in the winter season (sowing in May, 2006), the tested lineages were BRS Horizonte, CNFC 8059, CNFC 8065, CNFC 8075, VC-6, VC-7, VC-8, VC-9, VC-10, VC-11, VC-12, CNFC 10443, CNFC 10453, CNFC 10476, MA-I-2.5, MA-I-8.9, MA-I-18.13, RC-I-8, CV-46, CV-55 and Z-22, in addition to the controls OP-NS-331 (BRSMG Majestoso), Pérola and BRSMG Talismã and VC-3. In each experiment, a randomized block design was set up with 25 treatments and three replications with a useful experimental plot of 4 m². In the rainy growing season, the yield potential of the most productive lineages varied between 2.69 and 2.78 t ha-1 (VC-9 and VC-10, respectively), and in the winter season achieved 3 t ha-1 (3.01 and 3.00 t ha-1, CNFC 8065 and Z-22, respectively). In general, the lineages were more productive in the winter season though their interaction with the growing seasons indicated distinct performance between them according to season.
Phaseolus vulgaris; covariance analysis; cropping seasons; cultivar recommendation