ENVIRONMENTAL ADAPTIVITY AND STABILITY OF WINTER TRITICALE VARIETIES IN THE CONDITIONS OF THE FOOTHILL ZONE OF THE CENTRAL CAUCASUS

• Main Authors: I.R. Manukyan, M.A. Basiyeva, E.S. Miroshnikova
• Format: Article
• Language: English
• Published: Editorial and publishing department of FSBEE HE Penza SAU 2019-10-01
• Series: Volga Region Farmland
• Subjects: winter triticale; productivity; adaptability; resistance to stress; indices of environmental conditions; ecological plasticity; stability
• Online Access: https://niva-volga.ru/file/vipuski/2019_3_52/en/2019_3_3_en_82-86.pdf

The adaptive properties of winter triticale varieties under the agroecological conditions of the foothill zone of the Central Caucasus were estimated. The studies were conducted in 2016-2018 on the fields of North Caucasian Research Institute of Mountain and Foothill Agriculture Vladikavkaz Scientific Center of the Russian Academy of Sciences. The research material was seven varieties of winter triticale from the world collection of All-Union Research Institute of Plant Breeding. For a comprehensive estimation and selection of valuable source material for selection for adaptability, a set of techniques was used to establish the reliability of the observed differences and obtain the necessary information about potential productivity and environmental plasticity. The most popular indices in breeding practice were used in the work: Mexican, Canadian, linear spike density, as well as a new modification of the index – the plant productivity index (PPI). High resistance to environmental stress factors was established in the varieties Legion, Sotnik and Almaz, and the maximum compliance with environmental conditions in the region was found in varieties Zavet, Gorka, Ramzay, and Gor. Varieties of high-intensity type Zavet and Gor were responsive to improving conditions and were characterized by stable productivity.