Melnichenko H. Evaluation of primary material for productivity and resistance to lodging for rice varieties creation

Object of study - the gene pool of rice plants and hybrid material resistant to lodging was created in the selection process. Aim – creation of highly productive and resistant to lodging source material of rice for further use in the selection process. Methods – field - determination of field seed germination, plant survival and yield; visual - to detect phenological changes of plants; laboratory - determination of the mass of 1000 grains, germination energy, laboratory germination; measuring and weighing - analysis of crop structure; physiological morpho - determination of biometric indicators of plants; mathematical and statistical - for analysis of variance and objective evaluation of the obtained experimental data. Results –variety of rice sown Fagot is recommended for use in rice farms in Ukraine. Its average yield was 8.8 t / ha. An additional economic effect from the implementation was obtained, UAH 25.76 thousand. /ha. Early-maturing variety of rice sown Galeon - its average yield was 9.2 t / ha. The additional economic effect from the implementation amounted to UAH 32.20 thousand. /ha. Based on the obtained data, suggestions are made to improve the selection process - the created selection material is used in the selection process. Sowing rice lines UIR 9137, UIR 8308, which are characterized by a set of economically valuable features and are further studied in the competitive variety testing of the Rice Institute . Novelty –for the first time, as a result of studying 86 issues of the National Rice Collection of different ecological and geographical origin, 9 best samples were selected for their valuable features and properties; established features of inheritance and variability of quantitative traits that determine the levels of productivity of the panicle and resistance to lodging of rice sowing. The regularities of inheritance and variability of resistance against lodging and signs of productivity in hybrid populations F2 – F3 are determined. For the first time in the conditions of the south of Ukraine on the basis of individual selection on productivity and resistance against lodging constant lines and grades which are adapted to agroecological conditions of the south of Ukraine are created. The scientific value – - is to create a new source material of rice sowing resistant to lodging with high productivity, seed quality. Further development was the study of the effectiveness of individual selection on economically valuable grounds and created constant rice lines: UIR 9137, UIR 8308, which are characterized by high productivity and resistance to lodging. New high-yielding varieties of sowing rice Fagot (UIR 4558) and Galeon (UIR 4970) have been created. Formed a characteristic collection of sowing rice for salt resistance; the characteristic collection of rice sown on cold resistance is formed; formed a characteristic collection of rice by the length of the growing season, productivity and technological indicators of grain and cereals. Sector – agriculture, selection.