The study was conducted in the two eastern provinces of DR. Congo, namely the North and South Kivu, respectively as low-lying areas in Rutshuru and medium altitude PABU and Mulungu. The objective is to identify the variety that best suits whose seeds yield is stable in these different environments. The trials were installed after the device RCB and results of the analysis was done using the software Statistix. The results show that there was no significant difference between the varieties by the overall averages of yields (kg / ha). Considering the AFR708 varieties (2046.5kg / ha) Hm21-7 (1949.3kg / ha) and RWR2245 (1861kg / ha) have higher average returns in the three test sites and these varieties are found in the station site Mulungu where agro-ecological conditions are favorable. However, some varieties (niche) can be recommended for each site. These include: For the site of Mulungu, all varieties except ACC714 that has not made at least 800 kg / ha despite favorable crop conditions in this site; for the site PABU the varieties CODMLB033, AFR708, and CNF5520, RWR2154 and the site CEDERU the RWR2245 variety. As for the sensitivity of varieties to major diseases, the results (0.05) demonstrated a reaction ranging from resistant (for diseases Ascochyta blight, anthracnose and rust) and middle (for angular spot).