BIOFORTIFICATION OF RICE CULTIVARS IRRIGATED WITH LITHIUM DOSES VIA FOLIAR SPRAYING

Abstract

Although it is an essential trace element for human health, lithium (Li) intake is insufficient in several regions of the world. The biofortification of rice with this element is a technique that can contribute to minimize its deficiency in the population. Thus, the objective of this study was to determine the influence of Li doses applied via foliar on biofortification, physiological properties and production of irrigated rice cultivars. The experimental design was in randomized blocks in a 5x3 factorial arrangement, with four replications. The factors consisted of five Li doses (0, 50, 100, 150 and 200 g ha-1) and three irrigated rice cultivars (BRS Catiana, BRS Tropical and BRS Pampeira). The foliar application of LiOH· H2O provides an increase in the Li content in the grains of any of the rice cultivars under study. The supply of Li to rice plants does not influence their development, yield and physiological properties. There is genetic variability among rice cultivars regarding the accumulation of Li in the grains.