Authors: R. A. Biktimirov, Z. M. Sharipkulova, A. A. Nizaeva, R. A. Biktimirov, Z. M. Sharipkulova, A. A. Nizaeva
Bashkir Research Institute of Agriculture – Subdivision of the Ufa Federal Research Center of the RussianAcademy of Sciences, Ufa, Russia. E-mail: Этот адрес электронной почты защищён от спам-ботов. У вас должен быть включен JavaScript для просмотра.
Abstract. The purpose of research is to evaluate Sudan grass cultivars in terms of phenotypic plasticity and yield stability inchanging environmental conditions. Research methods. The article presents the data of the research conducted in conditions ofthe Cis-Ural steppe of the Bashkortostan Republic in 2016–2019. 12 Sudan grass cultivars and hybrid populations, selected inthe Bashkir Research Institute of Agriculture, being of varied ripeness, were studied for yielding capacity, stability, and plasticity.Weather conditions in the years of research on temperature and water regimes were different. That made it possible to evaluatethe lines in contrasting conditions of cultivation. Results. The most adaptive varieties for forage cultivation were identified:Demskaya variety and populations 285, 318 and 395 with a regression coefficient bi close and equal to one, are characterized asplastic; populations 392, 400, 446/2 are responsive to better growing conditions and characterized as intensive – bi > 1. Whencultivated for seeds, population 318 is defined as plastic, while Smena, Demskaya, Chishminskaya rannyaya, Yaktash cultivars,populations 276, 285, 392, 446/2 and 395 are responsive to improved growing conditions and identified as intensive. The bestpopulations according to the comprehensive assessment of varieties for dry matter yield, plasticity and stability are: 400 (yield69.7 c/ha; plasticity – 1.1; stability – 40.5) and 395 (69.2 c/ha; 1.0; 36.4, respectively). Populations 358 (yield 29.6 c/ha; plasticity– 1.0; stability – 5.2) and 318 (28.1 c/ha; 0.9; 4.2, respectively) were recognized as the best Sudan grass cultivars and populationsin terms of seed productivity, plasticity and stability, Scientific novelty. The article collects and presents the materials ofmany years of the study on Sudan grass phenotypic plasticity and stability.
Keywords: sorghum (Sorghum moench), Sudan grass (Sorghum sudanense), yielding capacity, adaptivity, plasticity, stability.
For citation: Biktimirov R. A., Sharipkulova Z. M., Nizaeva A. A. Agroecological assessment of Sudan grass cultivars and newhybrid populations of Bashkir selection // Agrarian Bulletin of the Urals. 2020. No. 10 (201). Pp. 2–7. DOI: 10.32417/1997-4868-2020-201-10-2-7.
