Abstract. In recent years, due to their chemical composition and high nutritional value, the food products, in which the buckwheat meal is used, have attracted widespread interest, becoming more and more popular. Food products, in which buckwheat meal is used, include pasta, biscuits, bread, cakes, pastry products. The aim of this study was to evaluate the technological parameters (sedimentation index and falling number) for the white wheat flour blends with whole buckwheat flour and rheological properties of dough made from these two types of flour. Thus, the blends were made from wheat flour and whole buckwheat flour in proportion of 10 %, 20 %, 30 %, 40 % and 50 %. Also, the technological properties of 100 % white wheat flour were determined for comparison. The technological properties of mixed flour and dough were determined according to the international standard methods. The addition of whole buckwheat flour to wheat flour influenced the technological and rheological parameters of mixed flours: increasing the amount of whole buckwheat flour (from 10 % to 20 %, 30 % and 40 %) causes decrease of the falling number (from 411 s, 382 s, 249 s up to 234 s, respectively) and of the sedimentation index (from 28 ml of wheat flour to 22-18 ml). With the increase of whole buckwheat ratio, the water absorption increased significantly from 58.6 % to 79.9 %, the dough development time increased significantly from 2.2 minutes to 8.7 minutes but the dough stability decreased from 7.9 minutes to 1.6 minutes. Regarding the Farinograph Quality Number, it is observed that the values increased with whole buckwheat flour addition of 10 %, 40 % and 50 %, but for the samples with addition of 20 % and 30 % this parameter decreased. The obtained results are important for the specialists of the bakery technological process.