UDC 633.112.631
DOI 10.36461/NP.2023.65.1.005
EVALUATION OF WINTER TRITICALE VARIETIES FOR PRODUCTIVITY AND ADAPTABILITY TO THE CONDITIONS OF THE FOOTHILL ZONE OF THE CENTRAL CAUCASUS
I.R. Manukyan, Candidate of Biological Sciences, Associate Professor
North Caucasus Research Institute of Hill and Foothill Agriculture - Branch of the Federal State Scientific Centre "Vladikavkaz Scientific Centre of the Russian Academy of Sciences", e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
The article presents the results of studies on the adaptability of winter triticale varieties of different eco-logical and geographical zones under the agroecological conditions of the foothill zone of the Central Caucasus in terms of yield. The research was carried out on the fields of the North Caucasus Research Institute of Hill and Foothill Agriculture of Vladikavkaz Scientific Centre of the Russian Academy of Sciences in 2020-2022. Six winter triticale varieties developed in different ecological and geographical regions were used to study their adaptability. Climatic conditions varied in the study years. The index of environmental conditions varied from -0.4 to 0.3. A negative index was characteristic of 2020, when soil and air drought during the vegetation period was a factor affecting yields. The winter triticale varieties studied showed different adaptability. The Gor and Hortenso varieties showed a high tolerance to environmental stressors. The varieties Gor and Hortenso showed a stable high ear productivity (136.3 and 141.0 %). The drought tolerance index (DSI) values up to one were for the varieties Gor (0.38) and Hortenso (0.67), and Almaz equal to one (1.04). High values of the PPI were ob-tained for the varieties Gor (18.4), Hortenso (17.3) and Almaz (13.8). The variation of yield trait by variety was 9.6-29.3%. The varieties Gor (9.6 %) and Hortenso (13.7 %) had the lowest coefficient of variation. The follow-ing varieties are recommended for practical breeding for productivity and drought tolerance under the conditions of the foothill zone of the Central Caucasus: Gor, Hortenso, and Almaz.
Keywords: breeding, winter triticale, productivity, drought tolerance.
