id: 38330
Title: Ecological plasticity and stability of soybean varieties under growing conditions in different ecogradients
Authors: Mazur O.V., Kravets R.А., Zayka K.R., Yakovets V.І.
Keywords: ecological plasticity, adaptability, ecogradient, stability, environmental conditions, hydrothermal regime, soybeans.
Date of publication: 2024-12-25 12:49:17
Last changes: 2024-12-25 12:49:17
Year of publication: 2024
Summary: In world agriculture diseases lead to a shortage of grain of approximately 135 million tons annually. It has been determined that the use of only one resistant variety corresponds, equally, to an increase in sown areas by 15-20 %, and their introduction reduces the need in using about 14-15 thousand tons of pesticides. Thus, the introduction of ecologically adaptive varieties will reduce the anthropogenic load on agrocenoses due to the higher resistance of genotypes to pathogens. The research results on the assessment of soybean varieties by adaptability (ecological plasticity and stability) in different soil and climatic conditions by resistance to diseases (downy mildew, viral mosaic) have been presented. The ranking of soybean varieties according to environmental plasticity and stability in accordance with their response to environmental conditions has been conducted. Our researches have shown that the intensity of the development of downy mildew and viral mosaic depends not only on the genetic characteristics of genotypes, but also on factors that are associated with the growing zone, especially with the hydrothermal and edaphic conditions of the region. The highest value for cultivation in different ecogradients under contrasting edaphic and hydrothermal conditions are the varieties that have disclosed the maximum indicators of downy mildew and viral mosaic resistance. Oriana – 84.1 and 82.8 %, Hoverla – 83.3 and 83.0 %, Amethyst – 80.1 and 80.7 %, Vezha – 79.5 and 80.6 % – with increased resistance during the research period in different ecogradients. At the same time, the varieties Oriana and Hoverla reacted little to changes in environmental conditions environment (hydrothermal and edaphic conditions), providing high stable stability indicators, and the Vezha and Amethyst varieties – to plastic and highly plastic, with a high response to changes in growing conditions.
URI: http://vsau.vin.ua/repository/getfile.php/38330.pdf
Publication type: Статті у наукових фахових виданнях України (Copernicus та інші)
Publication: Сільське господарство та лісівництво. 2024. № 3 (34). С. 55-66. DOI: 10.37128/2707-5826-2024-3-6
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