Plant productivity parameters in rice varieties with different type of panicles and their variability

To increase rice yield, scientists are considering the possibility of changing morphological parameters plants. At same time, there not enough attempts in Russia to analyze yield potential varieties with different panicle architectonics. The purpose our research was a comparative analysis differing morphotype, by formation productivity elements. In ecological conditions south Russia, 2019-2020, series field experiments were carried out 24 Oryza sativa L. under artificial irrigation. results assessing elements plant and biological differentiated into 6 groups according type grown on plots 1x12 m presented. present study showed that rice-growing zone Krasnodar region, compact inclined slightly spreading had an advantage achieving high productivity. However, stability quantitative traits exhibited panicles drooping type. Correlation confirmed: longer panicle, more it is less sterile spikelets formed it. Along other researchers, we revealed significant differences between japonica Indica varieties. Due cultivation equal conditions, variation from 778 1203 g / 2 can be explained their genotypic characteristics. For sustainable development growing studies emphasize importance diversity various morphotypes provide useful information for breeding.