EN
Vernalization requirements of 10 varieties of winter triticale were determined in pot experiment. The plants were vernalized during 0 (control), 28, 42 and 56 days at the temperature +4°C in phytotrone. After that, they were moved to close-to-natural conditions in the vegetation house, excluding the possibility of vernalization, and number of day's to heading and flowering was counted. It was proved that the tested varietes have different vernalization requirements. Moniko, Almo, Tewo, Prego, Moreno and Ugo have obligatory, relatively high vernalization requirements, while those of Vero and Presto are much lower. Requirements of cultivars Malno and Bogo are of fakultative character; they flower without previous vernalization, but cold treatment can shorten their vegetative phase of development.