Efeito da água magnetizada na germinação de sementes de alface

Abstract

Water when subjected to magnetic fields undergoes physicochemical changes and when used in agriculture has shown interesting effects on plant development and seed germination. The objective was to evaluate the effects of magnetized water under germination and dormancy of lettuce seeds (Lactuca sativa) in view of the scarcity of available data on the subject. The experiment was conducted at the Federal University of Uberlandia campus Monte Carmelo, under laboratory conditions. Genotypes UFU-125#2#2#1, UFU-206#1#6#1 and the commercial cultivar Grand Rapids were used in a completely randomized experimental design DIC, being a factorial scheme 2x3. Comprising deionized water, magnetized water and temperatures of twenty-thirty degrees Celsius with four replications. The treatments and repetitions were conducted in gerbox with germitest paper, and each gerbox received twenty five seeds, totaling two hundred seeds of each genotype. Daily evaluations were performed for seven consecutive days according to the Rules for Seed Analysis – RAS for data collection. At the end, the results were processed using the SISVAR software and subjected to analysis of variance, the means were compared by Tukey test at the level of 5 % probability. The magnetized water did not provide significant gains in relation to deionized water for the germination of lettuce seeds, and the treatments with deionized and magnetized water received the same averages when subjected to the test. For the treatments submitted to temperature of 30 °C there was no seed twinning in both cases.