Aim. Impact determination of rye seeds storage with 5-7% moisture content at unregulated temperature under eastern forest-steppe of Ukraine conditions on germination, productivity elements and plant height.] Results and Discussion. Results analysis caried on of rye seed storage of simple hybrid and two breeding lines of Institute of Plant Industry named after V. Ya. Yuriev of NAAS. These accessions stored in the depository at unregulated temperature under conditions of eastern forest-steppe of Ukraine with seed moisture content at 5-7% for 42 months. Average temperature in the depository where these studies were carried out was 9°C. There was no advantages were found for rye seeds longevity with different moisture levels within 5-7%. Analysis of yield components and plant height did not reveal a significant negative impact of the storage regimes used on these traits during the specified period. Significant correlation was found for individual accessions between field germination of seed and the level of precipitation in the month of sowing year; between plant height, productivity and precipitation during the development critical phases of season growing. Conclusion. Possibility of maintaining the initial germination of rye seeds for 42 months without significant changes was established. Seed with moisture content 5-7% of certain genotypes should storage at unregulated temperature under conditions of eastern forest-steppe of Ukraine in sealed container. Consequence of such storage conditions for rye seeds is the absence of significant variation of productivity elements.

Aim. The aim of the work was to establish the impact of rye seed storage in model conditions at seed moisture content of 5–7 % on germination indicators, productivity elements and plant height. Methods. The material for the research were seeds of rye accessions of different genotypes. The seeds used in the experiment were grown in the experimental fields of the Institute of Plant Production naned after V. Ya. Yuriev of NAAS (PPI), located in the northern forest-steppe of Ukraine. Laboratory germination was assessed according to the International Seed Testing Associations. Seeds after storage were sown in the experimental field of PPI during the growing seasons 2015/2016, 2016/2017, 2017/2018 in order to assess the elements of plant productivity. Indicators of temperature and precipitation of the period of seed growing have been recorded. Statistical processing of the obtained data was performed by standard methods using Excel. Results. It was found that after 12 months of storage of seeds of different genotypes in model conditions, significant changes in germination were observed only in isolated cases. After storing the seeds for 18 months, a significant reduction in germination was observed for all samples. Conclusions. Seeds of rye accessions with different genotypes in model conditions have different longevity. No significant benefits of seed moisture in the range of 5–7 % for its longevity. No significant stable impact of model storage conditions of experimental accessions of rye on plant height and elements of the structure of productivity in the year of research.

No abstract