Adaptability and stability of soybean cultivars in the region of Chapadões 1

[...]for the correct cultivar recommendation, methods of stability and adaptability analysis are used to verify the genotype x environment interaction at different sowing times. Soybean is grown in different environments and exposed to different characteristics of soil, temperature, photoperiod, and rainfall. [...]the effect of genotypes x environments interaction (GxE) is crucial in cultivars recommendation. The method aims at identifying cultivars that maintain the maximum yield in a wide range of environments, using the statistic parameter R. The method is easy to interpret and specifies the cultivar recommendation to groups of favorable and unfavorable environments (Cargnin et al., 2008; Peluzio et al., 2008.; Silva et al., 2008). The significant GxE interaction can be attributed to cultivars that were grown in dynamic environments, where they are exposed to unpredictable climatic factors during the whole development cycle.