Kutischeva N. Identification of self-pollinating sunflower lines with their sterile analogs and creation of adaptive nybrids

Object: identification of self-pollinating sterile lines and their analogues, stability and variability of performance traits in lines and hybrids of the first generation. The influence of genotype growing environment on valuable economic indicator sin first generation hybrids and their parental components. Objective: identification of self-pollinating sterile lines and their analogues, determining the variability of valuable economic traits and inheritance in hybrids of the first generation. High lighting particularly valuable with stable expression of the min lines and create on this basis sunflower hybrids resistant to biotic and abiotic factors in the Ukrainian steppe. Methods: general scientific, field, laboratory, statistical, variation, correlation. Novelty: an important scientifictask of establishing the degree of variability of the main valuable economic traits that occurunder the influence of agro-climatic condition sin thearid steppe zone of Ukraine was solved, identical sterile an alogueand sunflower hybrids adapted to the conditions of the Ukrainian steppe were created. The role of environmental factors and parental components on the formation of major valuable economic traits was determined; high-quality sources and donors for creating sunflower hybrids resistant to arid conditions of cultivation were selected. Linear high-yielding sunflower hybrids, with a high oil content in seeds in dry conditions Steppe zone of Ukraine were created. Questions of plasticity and stability of lines and hybrids for the main valuable economic trait sin arid zone conditions of the Ukrainian steppe were theoretically proved. Results: Patterns of inheritance and variability of economic traits in F1 that provide purposeful selection of lines to produce high-yielding hybrid combinations were determined. 15 sunflower hybrids, 12 of which are now passing quality testing were entered in the Register of Plant Varieties of Ukraine. Hybrids that were created are characterized by high ecological plasticity and stability, high adaptive capacity to drought conditions of steppe zone of Ukraine and have high lyproductive properties, process ability, have a high oil content in the seeds. Degree of implementation: hybrids that correspond to modern requirements were selected. New hybrids are widely use din manufacturing and lines-inbreeding programs of IOC NAAS, IR University Yuriev NAAS, SGI-NCSSNAAS. Using sublines ZL42A and ZL50A together with NPF"AGROS-SEM" Accord and Reason hybrids were created, that have access to growing in Moldova, Ukraine, Russia, Belarus. 12 hybrids are now passing the statetrials. Application: breeding institutions, farms of various forms of ownership.