Экологическая пластичность коллекционных образцов озимой тритикале по зимостойкости

• Main Authors: T. A. Babaytseva, E. N. Poltorydyadko, E. V. Kuznetsova
• Format: Article
• Language: Russian
• Published: Federal State Budgetary Scientific Institution “Agricultural Research Center “Donskoy”" 2018-05-01
• Series: Зерновое хозяйство России
• Subjects: озимая тритикале; коллекционные образцы; условия перезимовки; зимостойкость; экологическая пластичность; winter triticale; collection samples; conditions of wintering; winter tolerance; ecological adaptability
• Online Access: https://www.zhros.ru/jour/article/view/109
• ISSN: 2079-8725; 2079-8733

Ecological adaptability of the collection samples of winter triticale in frost tolerance Winter tolerance is one of the limiting factors that hinders winter grain crop cultivation in the Middle Pre-Urals. The winter triticale varieties cultivated in the region are characterized with insufficient winter tolerance. That’s why it’s necessary to estimate the initial material for resistance to unfavourable winter conditions before the breeding work. The purpose of the study is to evaluate ecological adaptability and stability of the initial material of winter triticale in winter. The researches were conducted on the experimental plot of the Izhevsky SAA during 2014-2016. The twenty-one samples developed by the domestic and foreign research institutions have been studied in the experimental plot. During the years of the experiment there were contrast wintering conditions that allowed estimating the initial material better. The average winter tolerance ranged from 2.5 to 4.1 points through the years at the varietal range of the trait 12.1-25.5%. The factor ‘conditions’ (42%) and the interaction of the factors ‘conditions-variety’ had a dominating effect on the changing ability of the winter triticale samples. There have been determined significant differences in winter tolerance variability among the collection samples, the coefficient of the variability ranged from 6.9% to 48.9%. The samples ‘Nemchinovsky 56’, ‘Tribun’ and the line ‘76/00’ have shown the best result in winter tolerance with the least index of variability (V = 6.9…9.4 %). The strongest winter tolerance (3.7-3.8 points) have been demonstrated by the varieties ‘Altayskaya 5’, ‘Antey’, ‘Zhitnitsa’, ‘Izhevskaya 2’, ‘Kaskad’ and ‘Konsul’, but the index has varied greatly through the years (V = 24.9-34.3 %). The varieties ‘Altayskaya 4’, ‘Antey’, ‘Bard’, ‘Valentin’, ‘Zimogor’, ‘Nemchinovsky 56’, ‘Tribun’, the lines ‘76/00’ and ‘423/12’ have revealed the best and the most stable winter tolerance in the unfavourable conditions. They can be recommended for the breeding work as an initial material for stable winter tolerance.