In this work are presented the results of investigation of reductional division and microsporogenesis processes at different representatives from xTriticosecale Wittmack. There was established that the meiotic division at Triticale forms are accomplished by signifi cant chromosome aberrations such as: retardate chromosomes, migrant chromosomes directed to the poles of the cell, chromatin bridges, micronuclei and others. As the criteria of the Triticale genome stability has been revealed the meiotic indexes. The cycle selection of plants with cytological stability contributes to predomination of euploid plants with increased fertility of spike in population of Triticale.