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Information × Registration Number 0220U103958, 0116U004005 , R & D reports Title To study the genetic and physiological components forming the adaptive capacity of crops and, on this basis allocate donor hardiness and drought resistance for use in selection of bread winter wheat. popup.stage_title Head Yurchenko Tetiana V., Кандидат сільськогосподарських наук Registration Date 02-12-2020 Organization The V.M. Remeslo Myronivka Institute of wheat popup.description2  The object of research are frost tolerance, winter hardiness and drought tolerance of winter wheat varieties, as well as the peculiarities of their manifestation and formation. The aim of the work is to study the genetic and physiological components of the formation of the adaptive potential of cereals and to select donors on this basis of frost tolerance and drought tolerance for use in breeding winter bread wheat. Research methods – field, laboratory, statistical. Results – According to the results of the assessment of soft winter wheat donors for frost and drought tolerance, varieties were identified: Myronivska 65, Voloshkova, Hospodynia Myronivska, MIP Valensiia, Elehiia, Statna, Line 174/3. Genotypes with complex tolerance had medium and weak sensitivity to photoperiod and vernalization need lasting 30-40 days. A database of varieties and lines of soft winter Myronov selection and samples of a collection nursery on physiological and genetic characteristics with increased adaptability potential has been created. A technique was developed for the selection and identification of valuable bread winter wheat genotypes with an increased potential for tolerance to abiotic stressors, which is highlighted in two guidelines and in a utility model patent. The recombinant-inbred lines of the hybrid combination of Madiarka / Demetra, which combined high indicators of frost and drought tolerance, were identified. In the donors of frost tolerance (varieties Romantyka, Kohana, Line 170/2) and drought tolerance (varieties Shchedra Nyva, Statna) in the γ-zone of the electrophoregram the same Gliadin blocks were found that are present in the standard varieties, which can serve as a marker of genotype tolerance to a certain adaptive sign. Correlation analysis revealed a significant negative dependence of the average strength between the signs of "growing cone length" with "frost tolerance" (r = -0.4 ... -0.63) before the beginning of winter. Product Description popup.authors Pykalo Serhii V. Prokopik Nataliia I Kharchenko Mykhailo V. popup.nrat_date 2020-12-02 Close