Abstract
Purpose. To establish the plasticity and stability of corn and sunflower hybrids in terms of yield at varying abiotic environmental factors and identify them in terms of yield in different zones of Ukraine.Methods. Field multifactorial experiments, mathematical methods of data analysis.Results. The results of studies on the plasticity and stability of field crops in different soil-climatic zones of Ukraine are presented on the example of yield of corn and sunflower hybrids which production in different regions of Ukraine is high. The average yield of maize hybrids is high and stable: in the Left-Bank Forest-Steppe from 8.67 to 11.6 t/ha, in the Right-Bank Forest-Steppe from 6.82 to 12.1 t/ha, with a coefficient of plasticity of 0.14–1.93. Of the 29 studied hybrids, 8 were high-plastic – b = 1.3–1.93; the combination of high plasticity and stability was found only in two hybrids: ‘P8529’ (b = 1.49; σd = 0.09) and ‘ES Beatles’ (b = 1.42, σd = 0.29). Highly sensitive to growing conditions were ‘Orzhytsia 237 MB 58’, ‘Aspid’, ‘Ajax’, ‘Coximo’ and ‘Alvito’ (b = 0.14–0.54). The reaction of hybrids on compaction of sowing and norms of mineral fertilizers was established. Through the formation of a root system with a certain morphology, yields during the 2015–2017 period varied from 6.82 to 12.1 t/ha. The plasticity of most hybrids was close to one. In the Right-Bank Forest-Steppe, the provision of moisture is a more restrictive factor than in the Left-Bank Forest-Steppe. The implementation of the potential of sunflower hybrids is much higher in the Left-Bank Forest-Steppe varying from 2.10 to 3.68 t/ha, as compared to the Southern Steppe where it makes 0.81 to 3.07 t/ha.Conclusions. The establishment of the coefficients of plasticity and stability allows the identification of stable yields of corn and sunflower hybrids of a high level of plasticity, which may be recommended for production in certain regions of cultivation. Adaptive cultivation technologies increase the stability of hybrids.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Scientific Papers of the Institute of Bioenergy Crops and Sugar Beet
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
