Chemicals-basded regulation of leaves-to-grains outflow of assimilates to enhance yields in rice (Oryza sativa L.) under conditions of its northern area

Rice is mainly produced in countries with a favorable climate for culture, lying between the equator and 45° latitude, but in recent years, interest in expanding of rice-growing to the north increases. In Russia, the terrotory of rice growing in Krasnodar region is located at the northern border of the crop area. For this reason, in certain years ripening of rice coincides with unfavorable weather conditions that cause an increase in the growing period, which leads to a decrease in the productivity of plants, delay in harvesting and losses of a significant part of the yield. In this regard, there is a need to develop ways to accelerate ripening without reducing the productivity of plants. Such a technique is artificial leaf senescence, a purposeful regulation of metabolism at the final stages of plant development with the use of chemicals. Artificial senescence should be used in case of delayed ripening, which is most often observed in late crops (due to postponement of sowing because of weather conditions), thinned crops or crops receiving excessive nitrogen nutrition...