Evaluation of feed productivity traits of winter triticale source material

Purpose. To identify promising samples of winter triticale by elements of feed productivity, which can be included in the breeding process to create source material for mowing purposes. Methods. Field (phenological observations and records of dry matter yield), laboratory (determination of dry matter yield), mathematical and statistical (evaluation of the experimental data). Results. The traits of feed productivity of collection samples of winter triticale during 2022-2024 were evaluated. It was determined that the height of plants varied significantly by years of research in 2022 from 53 to 109 cm, 2023 – 60-134 cm, 2024 – 60-144 cm. We identified samples that on average exceeded the standard by 11-35.6% in terms of plant height: NTH 1933, NTH 3476, Khleborob, Pavlodarskyi, Sybyrskyi, Tornado, Soiuz, Urahan and Strateh. This variation may lead to differences in other biomass characteristics and green mass yields. The leaf area of plants varied slightly by year: in 2022 – from 45.0 to 72.3%; in 2023 – 47.8-73.5%; in 2024 – 50.8-78.6%. According to the results of the calculations, only eight samples exceeded the standard for leafiness by 1-5% – Parus, Serhyi, Nykanor, Bozhych, Maiak, Borislav, Tsekad 22 and Tsekad 90. A slight variation of dry matter was noted in 2022 – from 0.42 kg/m2 to 0.91 kg/m2 , and a significant variation in 2023 – 0.58-1.43 kg/m2 and 2024 – 0.30-1.45 kg/m2 . We identified 12 samples that significantly exceeded the Bogodarske standard by 3-31 % – NTH 1933, Khleborob, Pavlodarskyi, Bozhych, Beta, Maiak, Desiatynne, Buket, Sybyrskyi, Tornado, Urahan and Strateh. Conclusions. According to the results of the study of the traits of feed productivity of winter triticale for three years, promising samples for further selection were identified, which can serve as a source material for the creation of winter triticale varieties with increased feed productivity.