@article{Савіна_Ковалюк_Шейдик_2017, title={Optimization of tobacco variety model to increase seed productivity}, volume={13}, url={https://journal.sops.gov.ua/article/view/97255}, DOI={10.21498/2518-1017.13.1.2017.97255}, abstractNote={<p><strong>Purpose</strong>. To develop a tobacco variety model with optimal inflorescence traits such as size and shape that will allow to increase seed productivity of the crop.</p><p><strong>Methods</strong>. Statistical and mathematical (correlative, regressive) ones.</p><p><strong>Results</strong>. Basic collection consisting of 282 variety samples registered in the National Genetics Center was evaluated, optimal parameters of inflorescence were defined that can provide a high seed yield. During statistical analysis, correlation matrix was developed with the purpose to highlight traits that correlate with inflorescence productivity. According to the results of correlation analysis, a strong relationship between the width and height of inflorescence (r = 0,773±0,038) was established. Somewhat weaker correlation was observed when modeling regressive relation between inflorescence height and width, where regression showed the medium relationship. Regression equation of these traits is as follows: y = 0,5585x + 8,4649. Inflorescence density (r = 0,646), height (r = 0,556) and width (r = 0,527) also had quite a high positive effect on seed productivity. The results of regression analysis pointed to the fact that there were a linear relationship between inflorescence size and seed productivity.</p><p><strong>Conclusions</strong>. Among 282 samples of basic tobacco collection, 29 varieties with high seed productivity was defined which can be used in the breeding process, and ‘Sobolchskyi 15/21’, ‘Ergo 23’, ‘C-11’, ‘Sygarnyi 99’ varieties were selected for large-scale implementation into the production of raw material of cigar type.</p>}, number={1}, journal={Plant varieties studying and protection}, author={Савіна, О. І. and Ковалюк, О. М. and Шейдик, К. А.}, year={2017}, month={Mar.}, pages={34–42} }